US2760769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for automatically controlling certain operations in a production plant by sensing by electro-magnetic induction the density, velocity and rate of flow of flowing magnetic material
Assignee: Individual
•
Filing: 1952-08-22
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Granted: 1956-08-28
•
Expires: 1972-08-22
Abstract
No abstract record available.
Inventors
- 👤 Nordahl I Onstad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:56
CPC Classifications
G; G05; G05D; G05D27/00; G05D27/02; G01; G01N; G01N27/00; G01N27/72; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1952185A
Cited
US2082539A
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US2064495A
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US2331418A
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US2405137A
Cited
US2409707A
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US2435043A
Cited
US2548876A
Cited
US2607223A
Cited
US2603688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |