Patent US3664595A successfully refreshed from Google Patents.
US3664595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film cartridge
Assignee: Eastman Kodak Co
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Filing: 1970-12-08
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Granted: 1972-05-23
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Expires: 1990-12-08
Abstract
Abstract D R A W I N G A FILM COMPARTMENT IN A FILM CARTRIDGE IS PROVIDED WITH FINS AT ITS INTERIOR CORNERS FOR SUPPORTING A ROLL OF FILM BY ITS EDGES TO KEEP THE ROLL OUT OF CONTACT WITH THE COMPARTMENT WALLS, THEREBY REDUCING THE FRICTIONAL FORCE RESISTING DISPLACEMENT OF THE FILM.
Inventors
- 👤 Hubert Nerwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:31
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |