US3090546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressurized oil seal for rotating machinery
Assignee: Schwitzer Corp
•
Filing: 1960-12-29
•
Granted: 1963-05-21
•
Expires: 1980-12-29
Abstract
No abstract record available.
Inventors
- 👤 Jr William E Woollenweber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:02
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/54; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/102; F04D29/104; F16C; F16C33/00; F16C33/72; F16C33/74; F05; F05D; F05D2220/00; F05D2220/40; F16C2360/00; F16C2360/23; F16C2360/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1413425A
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US1966855A
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US2124914A
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US2264341A
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US2326824A
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US2656096A
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US2768584A
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US2921533A
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US3024734A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |