Patent US1669118A successfully refreshed from Google Patents.
US1669118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrowhead
Assignee: Individual
•
Filing: 1927-11-09
•
Granted: 1928-05-08
•
Expires: 1947-11-09
Abstract
No abstract record available.
Inventors
- 👤 Darrow L Betts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:43
CPC Classifications
F; F42; F42B; F42B6/00; F42B6/02; F42B6/08; F42B12/00; F42B12/02; F42B12/36; F42B12/362
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) | 1931-05-08 | 1931-11-07 | 1932-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-05-08 | 1935-11-07 | 1936-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-05-08 | 1939-11-07 | 1940-05-08 | $7700.00 | Window Closed / Lapsed |