US1671900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Headlight
Assignee: Individual
•
Filing: 1925-10-20
•
Granted: 1928-05-29
•
Expires: 1945-10-20
Abstract
No abstract record available.
Inventors
- 👤 Irwin William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:04
CPC Classifications
F; F21; F21S; F21S41/00; F21S41/30; F21S41/32; F21S41/321; F21S41/10; F21S41/14; F21S41/162
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) | 1931-05-29 | 1931-11-28 | 1932-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-05-29 | 1935-11-28 | 1936-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-05-29 | 1939-11-28 | 1940-05-29 | $7700.00 | Window Closed / Lapsed |