Patent US2641381A successfully refreshed from Google Patents.
US2641381A
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US
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Sealing means for pressure vessels
Assignee: Hydropress Inc
•
Filing: 1948-11-18
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Granted: 1953-06-09
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Expires: 1968-11-18
Abstract
No abstract record available.
Inventors
- 👤 Joseph V Bertrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:21
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/46; F16J15/48; Y; Y10; Y10S; Y10S277/00; Y10S277/925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US84864A
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US1339636A
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US1449615A
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GB264524A
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GB397603A
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US2016223A
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US2062589A
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FR817534A
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US2126505A
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GB493575A
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US2291763A
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US2311240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |