Patent US1444072A successfully refreshed from Google Patents.
US1444072A
Expired / Lapsed
US
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Device for compressing piston rings
Assignee: Individual
•
Filing: 1920-01-08
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Granted: 1923-02-06
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Expires: 1940-01-08
Abstract
No abstract record available.
Inventors
- 👤 Kirk D Holland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:42
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/02; B25B27/12; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/536
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) | 1926-02-05 | 1926-08-07 | 1927-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-02-05 | 1930-08-07 | 1931-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-02-05 | 1934-08-07 | 1935-02-06 | $7700.00 | Window Closed / Lapsed |