US2990839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device using magnetizable vibratory conduit
Assignee: General Controls Co
•
Filing: 1955-12-22
•
Granted: 1961-07-04
•
Expires: 1975-12-22
Abstract
No abstract record available.
Inventors
- 👤 William A Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:26
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/02; F15B9/06; F15B9/07; F15B13/00; F15B13/02; F15B13/04; F15B13/042; F15B13/043; F15B13/0436; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2322
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2269072A
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US2149126A
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FR874370A
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US2310185A
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US2532723A
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US2579723A
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US2655940A
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US2699356A
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US2729751A
Cited
US2830152A
Cited
US2816976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |