US2583408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sine-bar grinding wheel truing device
Assignee: Individual
•
Filing: 1945-10-30
•
Granted: 1952-01-22
•
Expires: 1965-10-30
Abstract
No abstract record available.
Inventors
- 👤 Black Leon Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:56
CPC Classifications
B; B24; B24B; B24B53/00; B24B53/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1237001A
Cited
US1388308A
Cited
GB389762A
Cited
US2162267A
Cited
US2127614A
Cited
US2068611A
Cited
US2355020A
Cited
US2336758A
Cited
US2406043A
Cited
US2343637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |