Patent US2912898A successfully refreshed from Google Patents.
US2912898A
Expired / Lapsed
US
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Film gate for combined camera and projector
Assignee: A KIP LIVINGSTON
•
Filing: 1954-01-22
•
Granted: 1959-11-17
•
Expires: 1974-01-22
Abstract
No abstract record available.
Inventors
- 👤 John W Oxberry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:19
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/56; G03B21/00; G03B21/14; G03B21/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1377322A
Cited
US1911845A
Cited
US1466774A
Cited
US1522395A
Cited
US1369694A
Cited
US1397817A
Cited
US1536347A
Cited
US1673120A
Cited
US1802045A
Cited
US1898173A
Cited
FR706777A
Cited
US1955938A
Cited
US1859435A
Cited
US2008033A
Cited
US2093769A
Cited
US2087250A
Cited
US2049944A
Cited
US2148493A
Cited
US2226175A
Cited
US2067893A
Cited
US2168941A
Cited
US2186618A
Cited
US2213768A
Cited
US2253258A
Cited
US2207075A
Cited
US2256899A
Cited
US2343850A
Cited
US2440966A
Cited
US2506765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |