4. Communications: electrical
  5. Digital comparator systems

Raymond R. Lupkas

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Computer keyboard key depression inhibitor device

Typewriting machines – Key-board or key lever-actuating mechanism
Patent

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Computer responsive postage meter

Boots – shoes – and leggings
Patent

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Computer responsive postage meter

Communications: electrical – Digital comparator systems
Patent

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Computer-responsive supplemental printer

Printing – Selective or progressive – Bed and platen machines
Patent

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Electrically controlled postage meter

Printing – Selective or progressive – Printing members
Patent

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Profile ID: LFUS-PAI-P-298909

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