US1348640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston-ring
Assignee: CHAUNCEY R WATSON
•
Filing: 1918-12-05
•
Granted: 1920-08-03
•
Expires: 1938-12-05
Abstract
No abstract record available.
Inventors
- 👤 Hachmann Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:25
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/12; F16J9/14; F16J9/18; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49274
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) | 1923-08-03 | 1924-02-02 | 1924-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-08-03 | 1928-02-02 | 1928-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-08-03 | 1932-02-02 | 1932-08-03 | $7700.00 | Window Closed / Lapsed |