4. Winding, tensioning, or guiding
  5. Unwinding and rewinding a machine convertible information...
  6. Cartridge system

Norio Ohkawa

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Compact low-distortion squid magnetometer

Electricity: measuring and testing – Magnetic – Magnetometers
Patent

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Photo film cassette and cassette containing case for the same

Winding – tensioning – or guiding – Unwinding and rewinding a machine convertible information... – Cartridge system
Patent

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Spool lock member and photo film cassette having the same

Photography – Camera detail – Detachable or removable film holder unit
Reexamination Certificate

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Profile ID: LFUS-PAI-P-966554

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