US2904908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dipper teeth
Assignee: American Brake Shoe Co
•
Filing: 1955-07-14
•
Granted: 1959-09-22
•
Expires: 1975-07-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Ratkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:05
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
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US1247043A
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US2129420A
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US2251169A
Cited
GB565417A
Cited
US2325991A
Cited
US2427651A
Cited
US2483032A
Cited
US2657482A
Cited
US2702490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |