Patent US3495623A successfully refreshed from Google Patents.
US3495623A
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Double-seat valve and method of assembling the same
Assignee: Danfoss AS
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Filing: 1967-02-28
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Granted: 1970-02-17
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Expires: 1987-02-28
Abstract
No abstract record available.
Inventors
- 👤 Hans Jorgen Jespersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:34
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/44; F16K1/48; F16K1/482; F16K11/00; F16K11/02; F16K11/04; F16K11/044; F16K11/10; F16K11/14; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86759; Y10T137/86767; Y10T137/86783; Y10T137/86879; Y10T137/86895; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412
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) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |