US2762278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating lamp intensity scale sensitometer
Assignee: GAF Chemicals Corp
•
Filing: 1951-12-08
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Granted: 1956-09-11
•
Expires: 1971-12-08
Abstract
No abstract record available.
Inventors
- 👤 Monroe H Sweet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:14
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/10; G01J1/20; G01J1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1953471A
Cited
DE718969C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |