US2637953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder surfacing tool
Assignee: Ammco Tools Inc
•
Filing: 1950-04-17
•
Granted: 1953-05-12
•
Expires: 1970-04-17
Abstract
No abstract record available.
Inventors
- 👤 Billeter Henry Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:47
CPC Classifications
B; B24; B24B; B24B33/00; B24B33/08; B24B33/084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US489606A
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US639701A
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US698527A
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US1058245A
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US1171070A
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US1445154A
Cited
US1707988A
Cited
US2118720A
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US2112120A
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US2208901A
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US2596961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |