US3449547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermographic developing apparatus
Assignee: GAF Corp
•
Filing: 1966-12-27
•
Granted: 1969-06-10
•
Expires: 1986-12-27
Abstract
No abstract record available.
Inventors
- 👤 Robert C Goodman
- 👤 Robert L Boston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:24
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2941573A
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US3115731A
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US3114254A
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US3163104A
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US3313913A
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US3236174A
Cited
US3359404A
Cited
US3291466A
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US3378430A
Cited
US3331592A
Cited
US3363530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |