US2569778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston ring
Assignee: Hastings Manufacturing Co
•
Filing: 1947-01-06
•
Granted: 1951-10-02
•
Expires: 1967-01-06
Abstract
No abstract record available.
Inventors
- 👤 Harold P Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:54
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/06; F16J9/061; F16J9/063; F16J9/12; F16J9/20; F16J9/203; F16J9/206; Y; Y10; Y10S; Y10S277/00; Y10S277/924
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE484610C
Cited
US1445020A
Cited
CH182790A
Cited
FR855790A
Cited
US2317580A
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US2239376A
Cited
US2273691A
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US2404862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |