US2954264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing ring
Assignee: A P D CO
•
Filing: 1957-03-04
•
Granted: 1960-09-27
•
Expires: 1977-03-04
Abstract
No abstract record available.
Inventors
- 👤 Richard E Tisch
- 👤 George E Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:26
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US220461A
Cited
FR844623A
Cited
GB547066A
Cited
US2392182A
Cited
US2700561A
Cited
US2747954A
Cited
US2841429A
Cited
US2874807A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |