US2842901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve grinding machines
Assignee: Leavitt Machine Co
•
Filing: 1955-05-13
•
Granted: 1958-07-15
•
Expires: 1975-05-13
Abstract
No abstract record available.
Inventors
- 👤 Ralys Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:56
CPC Classifications
B; B24; B24B; B24B15/00; B24B15/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US289879A
Cited
US685697A
Cited
US707082A
Cited
US972533A
Cited
US2148627A
Cited
US2332676A
Cited
US2430785A
Cited
US2493852A
Cited
US2484335A
Cited
US2611222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |