US3464439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control valve
Assignee: Weatherhead Co
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Filing: 1966-06-16
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Granted: 1969-09-02
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Expires: 1986-06-16
Abstract
No abstract record available.
Inventors
- 👤 Tadeusz Budzich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:33
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0126; F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/44; F16K17/00; F16K17/20; F16K17/22; F16K17/24; F16K17/28; F16K17/30; F16K31/00; F16K31/12; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7792
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) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |