US2963262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vented resilient ring sealing construction
Assignee: Individual
•
Filing: 1957-05-27
•
Granted: 1960-12-06
•
Expires: 1977-05-27
Abstract
No abstract record available.
Inventors
- 👤 Homer J Shafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:15
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0663; F16K5/0673; F16K5/0626
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2628809A
Cited
US2722402A
Cited
US2847182A
Cited
US2810542A
Cited
US2747611A
Cited
US2810543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |