US3050608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistance heated stopcock
Assignee: Ace Glass Inc
•
Filing: 1960-02-16
•
Granted: 1962-08-21
•
Expires: 1980-02-16
Abstract
No abstract record available.
Inventors
- 👤 Woody Charles M De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:19
CPC Classifications
F; F16; F16K; F16K49/00; F16K49/002; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6606
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US897782A
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FR739123A
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US1978089A
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US2357473A
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US2556557A
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DE837426C
Cited
US2710900A
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US2761945A
Cited
US2883307A
Cited
US2876985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |