Patent US5928151A successfully refreshed from Google Patents.
Patent US2305590A successfully refreshed from Google Patents.
US2305590A
Expired / Lapsed
US
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Pressure sealed joint
Assignee: Crane Co
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Filing: 1941-04-16
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Granted: 1942-12-22
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Expires: 1961-04-16
Abstract
No abstract record available.
Inventors
- 👤 Adolf W Marburg
- 👤 Fennema Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:05
CPC Classifications
F; F28; F28C; F28C1/00; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/08; F16J15/0881; Y; Y02; Y02B; Y02B30/00; Y02B30/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-12-21 | 1946-06-22 | 1946-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-12-21 | 1950-06-22 | 1950-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-12-21 | 1954-06-22 | 1954-12-22 | $7700.00 | Window Closed / Lapsed |