US3435502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston ring and method of manufacture thereof
Assignee: Hastings Manufacturing Co
•
Filing: 1966-05-26
•
Granted: 1969-04-01
•
Expires: 1986-05-26
Abstract
No abstract record available.
Inventors
- 👤 Harry B Thompson
- 👤 William E Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:11
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/08; Y; Y10; Y10S; Y10S277/00; Y10S277/924; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49274; Y10T29/49281; Y10T29/49284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2436227A
Cited
US2919486A
Cited
US2905512A
Cited
US3133739A
Cited
US3133341A
Cited
US3337938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |