US2835514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary shaft seal
Assignee: Ingersoll Rand Co
•
Filing: 1954-03-03
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Granted: 1958-05-20
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Expires: 1974-03-03
Abstract
No abstract record available.
Inventors
- 👤 Wallace A Mcgahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:40
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/38; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/12; F04D29/126; F04D29/128; F16J15/3404
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1876515A
Cited
US1575970A
Cited
US1903210A
Cited
US1932214A
Cited
US2077038A
Cited
US2598176A
Cited
US2646999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |