US2622902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing mechanism for vertical axis centrifugal pumps
Assignee: Jonkopings Mekaniska Werkstads AB
•
Filing: 1946-08-23
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Granted: 1952-12-23
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Expires: 1966-08-23
Abstract
No abstract record available.
Inventors
- 👤 Malmvik Elof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:31
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/14; F04D29/146; F16; F16J; F16J15/00; F16J15/002; F16J15/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1976532A
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US2140356A
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Cited
GB507842A
Cited
US2258527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |