US2674933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic copying apparatus
Assignee: FOSTER AND FOSTER
•
Filing: 1947-11-17
•
Granted: 1954-04-13
•
Expires: 1967-11-17
Abstract
No abstract record available.
Inventors
- 👤 Wigglesworth Genevieve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:18
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US917696A
Cited
US1031906A
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US2272646A
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US2224839A
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FR861570A
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US2298097A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |