Patent US2250184A successfully refreshed from Google Patents.
Patent US1815001A successfully refreshed from Google Patents.
Patent US378784A successfully refreshed from Google Patents.
Patent US723232A successfully refreshed from Google Patents.
Patent US1297945A successfully refreshed from Google Patents.
US1297945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatically-extinguishing electric-lighting system.
Assignee: Individual
•
Filing: 1917-07-23
•
Granted: 1919-03-18
•
Expires: 1937-07-23
Abstract
No abstract record available.
Inventors
- 👤 John R Warden
- 👤 Howard C Warden Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:36
CPC Classifications
H; H05; H05B; H05B47/00; H05B47/10; H05B47/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1922-03-17 | 1922-09-16 | 1923-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-03-17 | 1926-09-16 | 1927-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-03-17 | 1930-09-16 | 1931-03-18 | $7700.00 | Window Closed / Lapsed |