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Patent US2458933A successfully refreshed from Google Patents.
US2458933A
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Unloader for reciprocating gas compressors
Assignee: General Electric Co
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Filing: 1946-12-18
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Granted: 1949-01-11
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Expires: 1966-12-18
Abstract
No abstract record available.
Inventors
- 👤 Wayne E Dodson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:07
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/22; F04B49/24; F04B41/00; F04B41/06; F04B49/06; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/264
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-11 | 1952-07-12 | 1953-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-11 | 1956-07-12 | 1957-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-11 | 1960-07-12 | 1961-01-11 | $7700.00 | Window Closed / Lapsed |