US2705016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butterfly valve
Assignee: Henry Pratt Co LLC
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Filing: 1952-10-28
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Granted: 1955-03-29
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Expires: 1972-10-28
Abstract
No abstract record available.
Inventors
- 👤 Robert P Saar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:01
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226; F16K1/228; Y; Y10; Y10S; Y10S277/00; Y10S277/921; Y10T; Y10T137/00; Y10T137/0318; Y10T137/4238; Y10T137/4245; Y10T137/4259; Y10T137/6416; Y10T137/6579; Y10T137/6851; Y10T137/7036
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) | 1958-03-28 | 1958-09-27 | 1959-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-28 | 1962-09-27 | 1963-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-28 | 1966-09-27 | 1967-03-29 | $7700.00 | Window Closed / Lapsed |