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US2725889A
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Gas-regulator vent
Assignee: General Controls Co
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Filing: 1950-09-11
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Granted: 1955-12-06
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Expires: 1970-09-11
Abstract
No abstract record available.
Inventors
- 👤 Laurence C Biggle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:10
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0655; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1774; Y10T137/7722; Y10T137/7754; Y10T137/7756; Y10T137/7757; Y10T137/7781; Y10T137/7793; Y10T137/7809; Y10T137/7812; Y10T137/7818; Y10T137/7819; Y10T137/7837; Y10T137/7847
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US270334A
Cited
US1178802A
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US1553807A
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US1614117A
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US1880178A
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US2208261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |