Patent US3468548A successfully refreshed from Google Patents.
US3468548A
Expired / Lapsed
US
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Rotating shaft seal
Assignee: National Aeronautics and Space Administration
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Filing: 1966-06-08
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Granted: 1969-09-23
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Expires: 1986-06-08
Abstract
No abstract record available.
Inventors
- 👤 Robert L Lessley
- 👤 George B Bosco Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:24
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/40; F16J15/406; Y; Y10; Y10S; Y10S277/00; Y10S277/93
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US945900A
Cited
US2330730A
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US3131940A
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US3161413A
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US3076656A
Cited
US3150822A
Cited
US3355179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |