US900613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic circuit-closer for electric-lamp holders.
Assignee: CHARLES M CROWELL
•
Filing: 1908-02-03
•
Granted: 1908-10-06
•
Expires: 1928-02-03
Abstract
No abstract record available.
Inventors
- 👤 William D Tickner
- 👤 Lucius C Tickner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:10
CPC Classifications
F; F21; F21V; F21V23/00; F21V23/04; Y; Y10; Y10S; Y10S362/00; Y10S362/802
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) | 1911-10-06 | 1912-04-06 | 1912-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-10-06 | 1916-04-06 | 1916-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-10-06 | 1920-04-06 | 1920-10-06 | $7700.00 | Window Closed / Lapsed |