Patent US2674032A successfully refreshed from Google Patents.
US2674032A
Expired / Lapsed
US
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Method of making valves for liquefied petroleum gas lighters
Assignee: Individual
•
Filing: 1950-07-17
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Granted: 1954-04-06
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Expires: 1970-07-17
Abstract
No abstract record available.
Inventors
- 👤 Richard H Martin
- 👤 Carroll L Kelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:36
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/36; F23D11/44; F23D2900/00; F23D2900/31018; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49348
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2482794A
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US2442642A
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |