US1581312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston ring
Assignee: Individual
•
Filing: 1924-08-08
•
Granted: 1926-04-20
•
Expires: 1944-08-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Jules A Fryoux
- 👤 Frank J Fryoux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:31
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/12; F16J9/20
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) | 1929-04-19 | 1929-10-19 | 1930-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-04-19 | 1933-10-19 | 1934-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-04-19 | 1937-10-19 | 1938-04-20 | $7700.00 | Window Closed / Lapsed |