US3285616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cushion seal for piston and cylinder assemblies
Assignee: Individual
•
Filing: 1964-04-14
•
Granted: 1966-11-15
•
Expires: 1984-04-14
Abstract
No abstract record available.
Inventors
- 👤 Kingsley A Doutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:27
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/20; F15B15/22; F15B15/222; F15B15/223
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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |