US2492685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control circuit
Assignee: GAF Chemicals Corp
•
Filing: 1944-06-07
•
Granted: 1949-12-27
•
Expires: 1964-06-07
Abstract
No abstract record available.
Inventors
- 👤 Samuel C Coroniti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:13
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G03B27/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2005892A
Cited
FR747996A
Cited
US2010577A
Cited
US2112736A
Cited
US2156886A
Cited
US2269324A
Cited
US2274158A
Cited
US2431158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |