US2951300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dipper teeth
Assignee: American Brake Shoe Co
•
Filing: 1956-09-19
•
Granted: 1960-09-06
•
Expires: 1976-09-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Ratkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:05
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/28; E02F9/2808; E02F9/2816; E02F9/2833; E02F9/2841
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US796798A
Cited
GB565417A
Cited
US2427651A
Cited
US2483032A
Cited
US2657482A
Cited
US2702490A
Cited
US2870667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |