US2601790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film shrinkage compensatory driving sprocket
Assignee: RCA Corp
•
Filing: 1948-09-01
•
Granted: 1952-07-01
•
Expires: 1968-09-01
Abstract
No abstract record available.
Inventors
- 👤 Magnusson Knut Johan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:11
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE204262C
Cited
AT89630B
Cited
US1904068A
Cited
US2277156A
Cited
US2402074A
Cited
US2401596A
Cited
US2401597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |