4. Package making
  5. Means to open or erect receptacle
  6. Means to open envelope

John R. DeHart

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Device for checking envelopes for enclosed documents

Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Signalling – indicating – or display means
Patent

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Device for checking envelopes for enclosed documents

Classifying – separating – and assorting solids – Electrostatic
Patent

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Envelope processing machine

Package making – Means to open or erect receptacle – Means to open envelope
Patent

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Envelope processing machine

Package making – Means to open or erect receptacle – Means to open envelope
Patent

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Magnetic signal detector

Registers – Coded record sensors – Particular sensor structure
Patent

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Profile ID: LFUS-PAI-P-1359460

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