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Barrier movement operator including timer to close feature

Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
Reexamination Certificate

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Barrier movement operator including timer to close feature

Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
Reexamination Certificate

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Barrier movement operator speed control

Electricity: motive power systems – Automatic and/or with time-delay means
Reexamination Certificate

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Barrier operator controller with optical limit switches

Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
Reexamination Certificate

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Barrier operator controller with optical limit switches

Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
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Barrier operator controller with user adjustable force setpoint

Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
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Barrier operator controller with user adjustable force setpoint

Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
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Barrier operator controller with user settable control...

Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
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Barrier operator controller with user settable control...

Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
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Barrier operator having system for detecting attempted forced en

Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
Patent

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Barrier operator having system for detecting attempted...

Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
Reissue Patent

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Battery-powered air handling system for subsurface aeration

Electricity: motive power systems – Automatic and/or with time-delay means – Pressure in a fluid or granular material
Reexamination Certificate

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Bi-directional pass-point system for controlling the operation o

Electricity: motive power systems – Automatic and/or with time-delay means
Patent

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Bi-directional pass-point system for controlling the...

Electricity: motive power systems – Automatic and/or with time-delay means
Reexamination Certificate

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Blind device with orientable slats

Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
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Blind device with orientable slats

Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
Reexamination Certificate

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Breaker/starter with auto-configurable trip unit

Electricity: motive power systems – Automatic and/or with time-delay means – Plural – diverse conditions or with time-delay means
Reexamination Certificate

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Brushless motor driving device

Electricity: motive power systems – Automatic and/or with time-delay means – Plural – diverse conditions or with time-delay means
Reexamination Certificate

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Bypass circuit for use in DC brush motor control

Electricity: motive power systems – Automatic and/or with time-delay means – Responsive to thermal conditions
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Capacitive anti finger trap proximity sensor

Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
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