US2992655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer valve
Assignee: Ohio Brass Co
•
Filing: 1958-12-30
•
Granted: 1961-07-18
•
Expires: 1978-12-30
Abstract
No abstract record available.
Inventors
- 👤 Charles A Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:16
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/20; F16K1/2007; F16K1/2028; F16K1/2042; F16K1/205; F16K1/2078; Y; Y10; Y10T; Y10T137/00; Y10T137/7504
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2351A
Cited
US818670A
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US1121199A
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US1672603A
Cited
US1744798A
Cited
DE909786C
Cited
US2756017A
Cited
US2740423A
Cited
US2742255A
Cited
US2805837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |