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US2981986A
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US
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Control apparatus and methods
Assignee: SPECIAL INSTR LAB Inc
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Filing: 1955-12-27
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Granted: 1961-05-02
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Expires: 1975-12-27
Abstract
No abstract record available.
Inventors
- 👤 Hugh G Neil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:35
CPC Classifications
D; D01; D01H; D01H5/00; D01H5/18; D01H5/32; D01H5/38; D01H5/42; Y; Y10; Y10S; Y10S131/00; Y10S131/905
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2249820A
Cited
FR731438A
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US2264725A
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US2407100A
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US2612743A
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US2565734A
Cited
DE882819C
Cited
US2750986A
Cited
US2805449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |