Patent US1780397A successfully refreshed from Google Patents.
US1780397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dipper tooth
Assignee: KENSINGTON STEEL Co
•
Filing: 1928-08-29
•
Granted: 1930-11-04
•
Expires: 1948-08-29
Abstract
No abstract record available.
Inventors
- 👤 Walter S Mckee
- 👤 Eugene C Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:30
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/28; E02F9/2808; E02F9/2816; E02F9/2825; E02F9/2833
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) | 1933-11-03 | 1934-05-05 | 1934-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-11-03 | 1938-05-05 | 1938-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-11-03 | 1942-05-05 | 1942-11-04 | $7700.00 | Window Closed / Lapsed |