Patent DE3242341A1 successfully refreshed from Google Patents.
US2509497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoke detector
Assignee: Cardox Corp
•
Filing: 1947-09-08
•
Granted: 1950-05-30
•
Expires: 1967-09-08
Abstract
No abstract record available.
Inventors
- 👤 James C Hesson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:10
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/10; G08B17/103; G08B17/11; G08B17/113
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US892241A
Cited
US1810739A
Cited
US1785393A
Cited
US1958631A
Cited
US2069160A
Cited
US2141175A
Cited
US2278920A
Cited
US2301367A
Cited
US2310105A
Cited
US2433702A
Cited
US2407361A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-29 | 1953-11-28 | 1954-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-29 | 1957-11-28 | 1958-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-29 | 1961-11-28 | 1962-05-30 | $7700.00 | Window Closed / Lapsed |