Patent US2269658A successfully refreshed from Google Patents.
US2269658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve buffing and polishing machine
Assignee: Wingfoot Corp
•
Filing: 1938-03-04
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Granted: 1942-01-13
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Expires: 1958-03-04
Abstract
No abstract record available.
Inventors
- 👤 Everett D George
- 👤 Harold M Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:06
CPC Classifications
B; B24; B24B; B24B15/00; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/519
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-01-12 | 1945-07-14 | 1946-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-01-12 | 1949-07-14 | 1950-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-01-12 | 1953-07-14 | 1954-01-13 | $7700.00 | Window Closed / Lapsed |