US2927387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Excavating tooth point retaining device
Assignee: American Steel Foundries
•
Filing: 1956-04-13
•
Granted: 1960-03-08
•
Expires: 1976-04-13
Abstract
No abstract record available.
Inventors
- 👤 Glenn F Drover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:58
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)
US2733915A
Cited
US1890981A
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US2050014A
Cited
US2259456A
Cited
US2328378A
Cited
US2427651A
Cited
US2483032A
Cited
US2772492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |