US2554689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable tool grinding machine
Assignee: Individual
•
Filing: 1948-01-07
•
Granted: 1951-05-29
•
Expires: 1968-01-07
Abstract
No abstract record available.
Inventors
- 👤 William W Warfel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:58
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/02; B24B3/10; Y; Y10; Y10T; Y10T82/00; Y10T82/13; Y10T82/135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1323452A
Cited
US1895830A
Cited
US2030538A
Cited
US1981174A
Cited
US2099724A
Cited
GB529327A
Cited
US2331381A
Cited
US2400826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |