US2795469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston rings
Assignee: Individual
•
Filing: 1954-01-15
•
Granted: 1957-06-11
•
Expires: 1974-01-15
Abstract
No abstract record available.
Inventors
- 👤 Otto W Haling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:19
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/12; F16J9/14; F16J9/145; F16J9/06; F16J9/064; F16J9/066; F16J9/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2387084A
Cited
US2343942A
Cited
US2436896A
Cited
US2297104A
Cited
US2635022A
Cited
US2637607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |