US2494971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing device for shafts
Assignee: JET SHAFT SEALS Inc
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Filing: 1944-04-27
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Granted: 1950-01-17
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Expires: 1964-04-27
Abstract
No abstract record available.
Inventors
- 👤 Orran B Summers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:08
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/40; F16J15/42; Y; Y10; Y10S; Y10S277/00; Y10S277/929
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-16 | 1953-07-18 | 1954-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-16 | 1957-07-18 | 1958-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-16 | 1961-07-18 | 1962-01-17 | $7700.00 | Window Closed / Lapsed |