US3417771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control apparatus for fluent magnetic materials
Assignee: Individual
•
Filing: 1965-09-24
•
Granted: 1968-12-24
•
Expires: 1985-09-24
Abstract
No abstract record available.
Inventors
- 👤 Ernst Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:36
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/56; G01F1/58; G01F1/582; F; F16; F16K; F16K31/00; F16K31/02; G05; G05D; G05D7/00; G05D7/06; G05D7/0617; G05D7/0629; G05D7/0635; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2082; Y10T137/2273
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3302532A
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US2415376A
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US2651258A
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US2741121A
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US3219851A
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US3258685A
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US3266514A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |