Patent US2674984A successfully refreshed from Google Patents.
Patent US2482873A successfully refreshed from Google Patents.
US2482873A
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Multiple valve and packing therefor
Assignee: Individual
•
Filing: 1946-03-11
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Granted: 1949-09-27
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Expires: 1966-03-11
Abstract
No abstract record available.
Inventors
- 👤 Roberts John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:07
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/02; F16K5/0257; F16K5/0278; F16K5/0207; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/87981
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR566675A
Cited
US2392319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-26 | 1953-03-28 | 1953-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-26 | 1957-03-28 | 1957-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-26 | 1961-03-28 | 1961-09-27 | $7700.00 | Window Closed / Lapsed |