US2693178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demand type gas regulator
Assignee: Airco Inc
•
Filing: 1949-12-21
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Granted: 1954-11-02
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Expires: 1969-12-21
Abstract
No abstract record available.
Inventors
- 👤 Gilroy John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:32
CPC Classifications
A; A61; A61M; A61M16/00; A62; A62B; A62B9/00; A62B9/02; A62B9/022; A62B9/027; Y; Y10; Y10S; Y10S137/00; Y10S137/908; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7795
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE212570C
Cited
US1319787A
Cited
US2441216A
Cited
US2535844A
Cited
US2552595A
Cited
US2597039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |