Patent US2641956A successfully refreshed from Google Patents.
US2641956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film-perforation pitch gauge
Assignee: Eastman Kodak Co
•
Filing: 1948-08-21
•
Granted: 1953-06-16
•
Expires: 1968-08-21
Abstract
No abstract record available.
Inventors
- 👤 Charles A Morrison
- 👤 Fordyce M Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:43
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/0007; G; G01; G01B; G01B11/00; G01B11/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1807737A
Cited
US500775A
Cited
US1486226A
Cited
US1894132A
Cited
US1963128A
Cited
US2087250A
Cited
US2192987A
Cited
US2219775A
Cited
US2157389A
Cited
US2247214A
Cited
US2289551A
Cited
US2363964A
Cited
US2290606A
Cited
US2237811A
Cited
US2385503A
Cited
US2351337A
Cited
US2333758A
Cited
US2375665A
Cited
US2376311A
Cited
US2408512A
Cited
US2410094A
Cited
US2457170A
Cited
US2398904A
Cited
US2421499A
Cited
US2360298A
Cited
US2396510A
Cited
US2444639A
Cited
US2439373A
Cited
US2461166A
Cited
US2466161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |