US2996676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus with pulse output when slope is zero in predetermined sense
Assignee: Sunoco Inc
•
Filing: 1952-04-08
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Granted: 1961-08-15
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Expires: 1972-04-08
Abstract
No abstract record available.
Inventors
- 👤 Shawhan Elbert Neil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:42
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0006; B01J19/0033; G; G05; G05B; G05B2219/00; G05B2219/30; G05B2219/45; G05B2219/45083; Y; Y10; Y10S; Y10S208/00; Y10S208/01
Claims Analysis
Total Claims: 0
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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) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |