Patent US2691460A successfully refreshed from Google Patents.
US2691460A
Expired / Lapsed
US
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Gasket sealing and cooling system
Assignee: Blaw Knox Co
•
Filing: 1950-09-27
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Granted: 1954-10-12
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Expires: 1970-09-27
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Barnebey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:08
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/46; Y; Y10; Y10S; Y10S277/00; Y10S277/921; Y10S277/93
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US647379A
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US672475A
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US1439452A
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US1633121A
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US1826941A
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US1678946A
Cited
US2152489A
Cited
US2306160A
Cited
US2362935A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-11 | 1958-04-12 | 1958-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-11 | 1962-04-12 | 1962-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-11 | 1966-04-12 | 1966-10-12 | $7700.00 | Window Closed / Lapsed |