Patent US3456401A successfully refreshed from Google Patents.
US3456401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake disc grinder
Assignee: Ammco Tools Inc
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Filing: 1965-08-30
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Granted: 1969-07-22
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Expires: 1985-08-30
Abstract
No abstract record available.
Inventors
- 👤 Walter P Kushmuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:14
CPC Classifications
B; B24; B24B; B24B7/00; B24B7/10; B24B7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1239268A
Cited
FR707445A
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US2365232A
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US2458472A
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US2553688A
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US2891435A
Cited
US2683341A
Cited
US2993311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |