Patent US2245546A successfully refreshed from Google Patents.
US2245546A
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US
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Automatic gas injector for liquid systems
Assignee: Individual
•
Filing: 1939-10-23
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Granted: 1941-06-10
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Expires: 1959-10-23
Abstract
No abstract record available.
Inventors
- 👤 George H Mcmullen
- 👤 Josiah M Haddaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:36
CPC Classifications
F; F04; F04B; F04B11/00; F04B11/0008; F04B11/0016; F04B45/00; F04B45/06; F04B45/073; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/313; Y10T137/3133
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-06-09 | 1944-12-09 | 1945-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-06-09 | 1948-12-09 | 1949-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-06-09 | 1952-12-09 | 1953-06-10 | $7700.00 | Window Closed / Lapsed |