US3459058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve operator
Assignee: Henry Pratt Co LLC
•
Filing: 1967-07-14
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Granted: 1969-08-05
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Expires: 1987-07-14
Abstract
No abstract record available.
Inventors
- 👤 Donald G Fawkes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:18
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16H; F16H21/00; F16H21/10; F16H21/44; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18752
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3385120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |