Patent US3237267A successfully refreshed from Google Patents.
Patent US2606571A successfully refreshed from Google Patents.
US2606571A
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Multipurpose control valve
Assignee: Thompson Grinder Co
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Filing: 1948-10-22
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Granted: 1952-08-12
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Expires: 1968-10-22
Abstract
No abstract record available.
Inventors
- 👤 Ernst Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:57
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; G; G05; G05D; G05D16/00; G05D16/04; G05D16/10; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20538; F15B2211/20576; F15B2211/30; F15B2211/305; F15B2211/30525; F15B2211/40; F15B2211/405; F15B2211/40515; F15B2211/42; F15B2211/421; F15B2211/423; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50518; F15B2211/52; F15B2211/528; F15B2211/55; F15B2211/555; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7053; F15B2211/76; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2554; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2635; Y10T137/5109; Y10T137/5196; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7805
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) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |