US2607545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reel drive mechanism for motionpicture film reels
Assignee: Bell and Howell Co
•
Filing: 1947-04-15
•
Granted: 1952-08-19
•
Expires: 1967-04-15
Abstract
No abstract record available.
Inventors
- 👤 Louis A Mcnabb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:19
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/43
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1377112A
Cited
US1737295A
Cited
US1733830A
Cited
US2280727A
Cited
US2321812A
Cited
US2383107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |