US2581759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cam grinding machine
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1950-03-31
•
Granted: 1952-01-08
•
Expires: 1970-03-31
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:46
CPC Classifications
B; B24; B24B; B24B19/00; B24B19/08; B24B19/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1845172A
Cited
US1683859A
Cited
US2041244A
Cited
US2101794A
Cited
US2303639A
Cited
US2272088A
Cited
US2328251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |