4. Movable or removable closures
  5. Safety means responsive to obstruction to closure
  6. Closure drive stopping or reversal

Thomas R. Richmond

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Apparatus and method for opening and closing a gate

Movable or removable closures – Optionally moved – manually – or by motor
Patent

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Apparatus and method for opening and closing a gate

Movable or removable closures – Safety means responsive to obstruction to closure – Closure drive stopping or reversal
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Apparatus and method for opening and closing a gate

Movable or removable closures – Safety means responsive to obstruction to closure – Closure drive stopping or reversal
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Apparatus and method for opening and closing a gate

Movable or removable closures – Safety means responsive to obstruction to closure – Closure drive stopping or reversal
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Barrier operator with panic control override mode and...

Electricity: motive power systems – Plural diverse motor controls – Motor-reversing
Reexamination Certificate

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