US2549546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic electrical copying device
Assignee: Individual
•
Filing: 1947-10-24
•
Granted: 1951-04-17
•
Expires: 1967-10-24
Abstract
No abstract record available.
Inventors
- 👤 Albert G Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:27
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/039; G03C; G03C5/00; G03C5/16; G03C5/18; G03G; G03G17/00; Y; Y10; Y10S; Y10S101/00; Y10S101/29; Y10S101/37; Y10S430/00; Y10S430/143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1148227A
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GB391100A
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GB464112A
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US2116901A
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US2153628A
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US2357674A
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US2234717A
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US2297691A
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US2281638A
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US2357809A
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US2409454A
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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) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |