Patent US2432145A successfully refreshed from Google Patents.
US2432145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire detector of the thermocouple type
Assignee: American District Telegraph Co
•
Filing: 1941-12-16
•
Granted: 1947-12-09
•
Expires: 1961-12-16
Abstract
No abstract record available.
Inventors
- 👤 Francis C Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:12
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1326304A
Cited
US521168A
Cited
US588177A
Cited
US235497A
Cited
USRE19564E
Cited
US660305A
Cited
US922320A
Cited
US775187A
Cited
US989420A
Cited
US1102666A
Cited
US1242499A
Cited
US1126199A
Cited
US1639412A
Cited
US1343393A
Cited
US1526641A
Cited
DE442007C
Cited
US1827252A
Cited
US1891039A
Cited
GB391428A
Cited
US2392873A
Cited
US2177493A
Cited
US2212211A
Cited
US2322410A
Cited
US2334085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-08 | 1951-06-09 | 1951-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-08 | 1955-06-09 | 1955-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-08 | 1959-06-09 | 1959-12-09 | $7700.00 | Window Closed / Lapsed |