US2660834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulator
Assignee: California Institute Research Foundation
•
Filing: 1949-02-11
•
Granted: 1953-12-01
•
Expires: 1969-02-11
Abstract
No abstract record available.
Inventors
- 👤 Jr William F Macglashan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:38
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/10; Y; Y10; Y10S; Y10S251/00; Y10S251/90; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7823
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US251726A
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US331789A
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US554455A
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US776839A
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US2106671A
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US2286027A
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US2360733A
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US2513976A
Cited
US2542390A
Cited
GB657056A
Cited
US2624542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |