US3528729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film feed mechanism for motion picture projector
Assignee: Graflex Inc
•
Filing: 1967-04-03
•
Granted: 1970-09-15
•
Expires: 1987-04-03
Abstract
No abstract record available.
Inventors
- 👤 Howard Charles Deck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:16
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/18; G03B1/20; G03B1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2339202A
Cited
US2552250A
Cited
GB675898A
Cited
DE1038906B
Cited
US3120781A
Cited
CH397415A
Cited
US3152741A
Cited
US3314344A
Cited
US3395965A
Cited
US3402006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |