Patent US2662349A successfully refreshed from Google Patents.
US2662349A
Expired / Lapsed
US
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Reduction valve for pressure liquids
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1947-08-07
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Granted: 1953-12-15
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Expires: 1967-08-07
Abstract
No abstract record available.
Inventors
- 👤 Akerlind Hilmer Gustav Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:51
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/10; G05D16/107; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7823; Y10T137/7826
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US868219A
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US1588107A
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US2047101A
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US2261364A
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US2357318A
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US2313564A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |