Patent US2909398A successfully refreshed from Google Patents.
US2909398A
Expired / Lapsed
US
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Liquid spring seal
Assignee: Tayco Developments Inc
•
Filing: 1956-05-18
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Granted: 1959-10-20
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Expires: 1976-05-18
Abstract
No abstract record available.
Inventors
- 👤 Paul H Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:43
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F15B1/08; F15B1/24; F16; F16F; F16F5/00; F16F9/00; F16F9/32; F16F9/36; F16J; F16J15/00; F16J15/16; F16J15/166; F15B2201/00; F15B2201/20; F15B2201/21; F15B2201/30; F15B2201/31; F15B2201/312; F15B2201/315; F15B2201/3157; F15B2201/32; Y; Y10; Y10S; Y10S277/00; Y10S277/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2708573A
Cited
US2742333A
Cited
GB754870A
Cited
US2807511A
Cited
US2757994A
Cited
USRE24440E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |