Patent US2425209A successfully refreshed from Google Patents.
US2425209A
Expired / Lapsed
US
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Seat for mechanical seals
Assignee: Crane Packing Co
•
Filing: 1944-08-31
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Granted: 1947-08-05
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Expires: 1964-08-31
Abstract
No abstract record available.
Inventors
- 👤 Russel D Snyder
- 👤 Edwin J Coleman
- 👤 Carl E Schmitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:33
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36; Y; Y10; Y10S; Y10S277/00; Y10S277/922; Y10S277/923
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US941605A
Cited
GB159255A
Cited
US1820100A
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US1756323A
Cited
US1862887A
Cited
US1980082A
Cited
US2202717A
Cited
US2250621A
Cited
US2362363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-04 | 1951-02-03 | 1951-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-04 | 1955-02-03 | 1955-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-04 | 1959-02-03 | 1959-08-05 | $7700.00 | Window Closed / Lapsed |