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US3794490A Expired / Lapsed US ⏱️ 0.0 years remaining

Photographic diffusion transfer film unit with disposable pod and trap

Assignee: Eastman Kodak Co
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Filing: 1971-09-07
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Granted: 1974-02-26
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Expires: 1991-09-07
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Abstract

Abstract A PHOTOGRAPHIC FILM UNIT OF THE SELF-PROCESSING TYPE, INCLUDING AN IMAGE-RECORDING PORTION AND RESEERVOIR MEANS FOR ACCOMMODATING A PROCESSING FLUID. THE RESERVOIR MEANS PREFERABLY INCLUDES A POD FOR SUPPLYING THE PROCESSING FLUID TO THE LEADING END OF THE RECORDING PORTION, AND/OR A TRAP FOR COLLECTING ANY EXCESS OF THE FLUID FROM ITS TRAILING END. THE RESERVOIR MEANS IS COUPLED TO AND SUPPORTED ON THE IMAGE-RECORDING PORTION IN A RELATIVELY STIFF MANNER, TO FACILITATE HANDLING OF THE FILM UNIT, AND TO IMPROVE CERTAIN OF ITS OTHER PROPERTIES, BUT EASILY CAN BE PARTED AFTER PROCESSING OF THE FILM UNIT HAS BEEN INITIATED, TO SEPARATE THE RESERVOIR MEANS FROM THE IMAGERECORDING PORTION.

Inventors

  • 👤 H Nerwin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 08:53
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/42; G03C8/44; G03C8/46

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-02-25 1977-08-27 1978-02-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-02-25 1981-08-27 1982-02-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-02-25 1985-08-27 1986-02-26 $7700.00 Window Closed / Lapsed

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