Patent US2499909A successfully refreshed from Google Patents.
US2979068A
Expired / Lapsed
US
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Step-type control system and relay therefor
Assignee: Taylor Instrument Co
•
Filing: 1956-09-27
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Granted: 1961-04-11
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Expires: 1976-09-27
Abstract
No abstract record available.
Inventors
- 👤 Augustus W Griswold
- 👤 Harvey A Klumb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:31
CPC Classifications
G; G05; G05B; G05B6/00; G05B6/05; Y; Y10; Y10T; Y10T137/00; Y10T137/2278
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) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |