US2416980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizer for process controllers
Assignee: Hays Corp
•
Filing: 1942-10-01
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Granted: 1947-03-04
•
Expires: 1962-10-01
Abstract
No abstract record available.
Inventors
- 👤 Burns Frank Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:25
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/20; G05D16/2006; G05D16/2066; G05B; G05B5/00; G05B5/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2053797A
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US2098914A
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US2116992A
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US2193184A
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US2193192A
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US2178864A
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US2208559A
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US2285287A
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US2255284A
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US2356580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-03 | 1950-09-02 | 1951-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-03 | 1954-09-02 | 1955-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-03 | 1958-09-02 | 1959-03-04 | $7700.00 | Window Closed / Lapsed |