US2812624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder surfacing tool
Assignee: Ammco Tools Inc
•
Filing: 1955-04-12
•
Granted: 1957-11-12
•
Expires: 1975-04-12
Abstract
No abstract record available.
Inventors
- 👤 Billeter Henry Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:02
CPC Classifications
B; B24; B24B; B24B33/00; B24B33/08; B24B33/084
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US274756A
Cited
US1382552A
Cited
US1588557A
Cited
US2017941A
Cited
US1727844A
Cited
US1821518A
Cited
US2310468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |