Patent US3536333A successfully refreshed from Google Patents.
US3536333A
Expired / Lapsed
US
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Rotary seals
Assignee: Pac-Sea Inc
•
Filing: 1968-03-18
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Granted: 1970-10-27
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Expires: 1988-03-18
Abstract
No abstract record available.
Inventors
- 👤 Norbert W Gits
- 👤 Walter J Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:42
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/38; Y; Y10; Y10S; Y10S277/00; Y10S277/925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2593899A
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DE941110C
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US2806720A
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US2856219A
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GB773663A
Cited
US3020056A
Cited
GB886045A
Cited
US3162136A
Cited
US3047298A
Cited
GB946534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |