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US3435842A
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Apparatus for installing a valve seat in a valve
Assignee: Fujii Kinzoku Kako Co Ltd
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Filing: 1966-03-30
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Granted: 1969-04-01
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Expires: 1986-03-30
Abstract
No abstract record available.
Inventors
- 👤 Susumu Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:26
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/42; Y; Y10; Y10T; Y10T137/00; Y10T137/7504; Y10T137/7668
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US647192A
Cited
GB191224189A
Cited
US1493784A
Cited
US2599498A
Cited
US2692750A
Cited
US2845085A
Cited
US3228655A
Cited
US3250510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |