Patent US3262585A successfully refreshed from Google Patents.
US3404606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston ring for internal combustion engines
Assignee: Individual
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Filing: 1965-12-29
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Granted: 1968-10-08
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Expires: 1985-12-29
Abstract
No abstract record available.
Inventors
- 👤 Papst Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:58
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/04; F; F16; F16J; F16J9/00; F16J9/26; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/939; Y10S277/94
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |