US3447776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural magnet operated poppet valve
Assignee: Netstal Maschinen AG
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Filing: 1966-11-30
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Granted: 1969-06-03
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Expires: 1986-11-30
Abstract
No abstract record available.
Inventors
- 👤 Armin Blumer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:58
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655; F16K31/0651; F16K31/08; F16K31/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1085425A
Cited
FR878230A
Cited
US2322911A
Cited
US2598754A
Cited
DE936838C
Cited
US3023576A
Cited
US3190608A
Cited
US3361161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |