US2457378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas control valve
Assignee: AUTOMATIC PRODUCTS CO
•
Filing: 1944-06-05
•
Granted: 1948-12-28
•
Expires: 1964-06-05
Abstract
No abstract record available.
Inventors
- 👤 Roy W Johnson
- 👤 Cedric E Zarwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:47
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/1919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1842328A
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US1908477A
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US1961324A
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US2085300A
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US1980789A
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US2177380A
Cited
US2159617A
Cited
US2185978A
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US2288890A
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US2247060A
Cited
US2293556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-28 | 1952-06-28 | 1952-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-28 | 1956-06-28 | 1956-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-28 | 1960-06-28 | 1960-12-28 | $7700.00 | Window Closed / Lapsed |