Patent US2605342A successfully refreshed from Google Patents.
US2605342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire alarm system
Assignee: ROBERT C COLLINS
•
Filing: 1948-12-10
•
Granted: 1952-07-29
•
Expires: 1968-12-10
Abstract
No abstract record available.
Inventors
- 👤 Sherman D Spurling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:25
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)
US367332A
Cited
US529000A
Cited
US570967A
Cited
US822888A
Cited
US1732276A
Cited
US1996308A
Cited
US2078175A
Cited
US2448026A
Cited
US2439502A
Cited
US2461962A
Cited
US2489213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |