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US2518209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Picture projector
Assignee: Individual
•
Filing: 1947-07-30
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Granted: 1950-08-08
•
Expires: 1967-07-30
Abstract
No abstract record available.
Inventors
- 👤 Jack Van H Whipple
- 👤 Gerald P Kammerer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:53
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/08; G03B23/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2332810A
Cited
US1889575A
Cited
US2008982A
Cited
US2076853A
Cited
US2037705A
Cited
US2279463A
Cited
US2323787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |