US3477690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stem-cranked,cam-adjusted butterfly valve assemblies
Assignee: Nippon Chuzo Co Ltd
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Filing: 1966-09-07
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Granted: 1969-11-11
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Expires: 1986-09-07
Abstract
No abstract record available.
Inventors
- 👤 Shozaburo Murota
- 👤 Masaharu Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:25
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/521; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/221; F16K1/24; F16K31/524; F16K31/52408; F16K31/52441
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |