US2861569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve apparatus for dispensing gas
Assignee: Individual
•
Filing: 1955-04-01
•
Granted: 1958-11-25
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Expires: 1975-04-01
Abstract
No abstract record available.
Inventors
- 👤 John H Emerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:41
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/30; F16K1/304; F16K1/305; A; A62; A62B; A62B9/00; A62B9/006; B; B63; B63C; B63C11/00; B63C11/02; B63C11/18; B63C11/22; B63C11/2209; F16K1/307; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1789
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US447211A
Cited
GB190400970A
Cited
US923808A
Cited
US963836A
Cited
US1582938A
Cited
US2634748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |