US2867703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photothermic relay and control system
Assignee: Individual
•
Filing: 1957-03-25
•
Granted: 1959-01-06
•
Expires: 1977-03-25
Abstract
No abstract record available.
Inventors
- 👤 Koslow George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:35
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N5/085; F23M; F23M11/00; F23M11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US878456A
Cited
US1167045A
Cited
US2063997A
Cited
US2159392A
Cited
US2371590A
Cited
US2441025A
Cited
US2502844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |