US2513377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas dispensing device with pilot valve controlled outlet valve
Assignee: Specialties Development Corp
•
Filing: 1944-12-23
•
Granted: 1950-07-04
•
Expires: 1964-12-23
Abstract
No abstract record available.
Inventors
- 👤 John H Stroop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:02
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/14; G05D16/16; G05D16/166
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB190514638A
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US932497A
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US1233856A
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US1750317A
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GB419737A
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US2258869A
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US2172142A
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US2268733A
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US2273756A
Cited
US2319907A
Cited
US2361225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-03 | 1954-01-02 | 1954-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-03 | 1958-01-02 | 1958-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-03 | 1962-01-02 | 1962-07-04 | $7700.00 | Window Closed / Lapsed |