US3502297A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air operated and diaphragm controlling water sprinkler valve with adjustable outlet
Assignee: CRITTENDEN COMPANY Inc A CORP OF
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Filing: 1968-08-30
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Granted: 1970-03-24
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Expires: 1988-08-30
Abstract
No abstract record available.
Inventors
- 👤 Willis W Wardrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:49
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/12; F16K7/14; F16K7/17; B; B05; B05B; B05B1/00; B05B1/30; B05B1/3006; B05B1/32; B05B1/326
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) | 1973-03-23 | 1973-09-22 | 1974-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-23 | 1977-09-22 | 1978-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-23 | 1981-09-22 | 1982-03-24 | $7700.00 | Window Closed / Lapsed |