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US3441246A
Expired / Lapsed
US
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Electromagnetic valve
Assignee: Danfoss AS
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Filing: 1966-07-20
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Granted: 1969-04-29
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Expires: 1986-07-20
Abstract
No abstract record available.
Inventors
- 👤 Heinz Lauppe
- 👤 Dieter Westphal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:25
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/20; G05D16/2093; F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0686; F16K31/0689; F16K31/0693; G05D16/2006; G05D16/2013; G05D16/2022
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) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |