4. Electric heating
  5. Heating devices
  6. Tool or instrument

Harold S. Foster

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Ribbon cartridge with pivotable ribbon guide arms

Typewriting machines – Including interposed inking device for record-medium – Means auxiliary to ribbon mechanism
Patent

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Soldering iron with replaceable heating element and a grounded h

Electric heating – Heating devices – Tool or instrument
Patent

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Universal end of ribbon sensing system

Typewriting machines – Including interposed inking device for record-medium – Package for ribbon facilitating mounting of ribbon on...
Patent

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Profile ID: LFUS-PAI-P-941361

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