Patent US3421732A successfully refreshed from Google Patents.
US3421732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidic controlled water valve or the like
Assignee: Robertshaw Controls Co
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Filing: 1966-05-26
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Granted: 1969-01-14
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Expires: 1986-05-26
Abstract
No abstract record available.
Inventors
- 👤 Robert L Golden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:05
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/16; F16K31/165; D; D06; D06F; D06F39/00; D06F39/08; D06F39/083; F16K11/00; F16K11/10; F16K11/20; F16K11/24; D06F37/00; D06F37/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1941831A
Cited
US2641871A
Cited
US2759075A
Cited
US3032056A
Cited
US3250295A
Cited
US3208394A
Cited
US3294030A
Cited
US3334545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |