Patent US2433080A successfully refreshed from Google Patents.
US2433080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire alarm system
Assignee: JAMES Manufacturing CO
•
Filing: 1942-07-20
•
Granted: 1947-12-23
•
Expires: 1962-07-20
Abstract
No abstract record available.
Inventors
- 👤 William M Willett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:08
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)
US426688A
Cited
US740823A
Cited
US754555A
Cited
US1067407A
Cited
US1158146A
Cited
US1125674A
Cited
US1159701A
Cited
DE325618C
Cited
US1581260A
Cited
US1536332A
Cited
FR653082A
Cited
US1990659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-22 | 1951-06-23 | 1951-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-22 | 1955-06-23 | 1955-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-22 | 1959-06-23 | 1959-12-23 | $7700.00 | Window Closed / Lapsed |