US921625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double-circuit flasher.
Assignee: Individual
•
Filing: 1906-09-07
•
Granted: 1909-05-11
•
Expires: 1926-09-07
Abstract
No abstract record available.
Inventors
- 👤 William J Phelps
- 👤 J Wiley Phelps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:49
CPC Classifications
H; H05; H05B; H05B45/00; H05B45/40; H05B45/44; H05B45/46
Claims Analysis
Total Claims: 0
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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) | 1912-05-10 | 1912-11-09 | 1913-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-05-10 | 1916-11-09 | 1917-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-05-10 | 1920-11-09 | 1921-05-11 | $7700.00 | Window Closed / Lapsed |