US3489177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control valve for use with fluid step motor
Assignee: MR HASEGAWA
•
Filing: 1967-07-19
•
Granted: 1970-01-13
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Expires: 1987-07-19
Abstract
No abstract record available.
Inventors
- 👤 Yoshitsugu Tsuchiya
- 👤 Kazuyoshi Uyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:34
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/14; F15B11/00; F15B11/08; F15B11/12; F15B11/127; F15B11/128; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86558; Y10T137/86566; Y10T137/86863; Y10T137/86871
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1546579A
Cited
US3213881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |