US3487849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Raymond Kaiser Engineers Inc
•
Filing: 1967-09-18
•
Granted: 1970-01-06
•
Expires: 1987-09-18
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Vietorisz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:45
CPC Classifications
F; F16; F16K; F16K49/00; F16K49/005; F16K49/007; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6579
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1070693A
Cited
US1102197A
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US1824434A
Cited
US1905638A
Cited
US2132262A
Cited
US2204724A
Cited
US2331465A
Cited
US2884959A
Cited
US3040773A
Cited
US3207174A
Cited
US3266517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |