Patent US2451835A successfully refreshed from Google Patents.
US2451835A
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Supercharger control system
Assignee: General Electric Co
•
Filing: 1942-01-28
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Granted: 1948-10-19
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Expires: 1962-01-28
Abstract
No abstract record available.
Inventors
- 👤 Wilfrid E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:41
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; B; B64; B64D; B64D13/00; B64D13/02; B64D13/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/7789
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) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |