US1421133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve-refacing apparatus
Assignee: Albertson and Co Inc
•
Filing: 1920-09-07
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Granted: 1922-06-27
•
Expires: 1940-09-07
Abstract
No abstract record available.
Inventors
- 👤 Frans O Albertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:20
CPC Classifications
B; B23; B23C; B23C3/00; B23C3/02; B23C3/05; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2531; Y10T82/2541; Y10T82/2568; Y10T82/2571; Y10T82/29
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) | 1925-06-26 | 1925-12-26 | 1926-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-06-26 | 1929-12-26 | 1930-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-06-26 | 1933-12-26 | 1934-06-27 | $7700.00 | Window Closed / Lapsed |