Patent US2323592A successfully refreshed from Google Patents.
US2323592A
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Two-speed supercharger drive control
Assignee: RTX Corp
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Filing: 1940-02-24
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Granted: 1943-07-06
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Expires: 1960-02-24
Abstract
No abstract record available.
Inventors
- 👤 Harry W Gunberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:22
CPC Classifications
F; F02; F02D; F02D9/00; F16; F16H; F16H61/00; F16H61/02; F16H61/0262; F02D2700/00; F02D2700/02; F02D2700/0217; F02D2700/0225; F02D2700/0246; F02D2700/0256; F16H2708/00; F16H2708/02; F16H2708/06; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-07-05 | 1947-01-04 | 1947-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-07-05 | 1951-01-04 | 1951-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-07-05 | 1955-01-04 | 1955-07-06 | $7700.00 | Window Closed / Lapsed |