Patent US3012584A successfully refreshed from Google Patents.
US3012584A
Expired / Lapsed
US
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Gas valve structure
Assignee: Lincoln Brass Works Inc
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Filing: 1959-10-01
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Granted: 1961-12-12
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Expires: 1979-10-01
Abstract
No abstract record available.
Inventors
- 👤 Perow Donald E Du
- 👤 Donald E Blackford
- 👤 Everett W Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:06
CPC Classifications
F; F16; F16K; F16K35/00; F16K35/02; F16K35/027; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87056; Y10T137/87088; Y10T137/87917; Y10T137/87981; Y10T137/87989; Y10T137/88022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |