Patent US2812128A successfully refreshed from Google Patents.
US2812128A
Expired / Lapsed
US
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Rotary compressor valve
Assignee: General Electric Co
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Filing: 1955-11-25
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Granted: 1957-11-05
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Expires: 1975-11-25
Abstract
No abstract record available.
Inventors
- 👤 Robert E Bosch
- 👤 Kenneth K Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:07
CPC Classifications
F; F04; F04C; F04C28/00; F04C28/18; F25; F25B; F25B31/00; F25B31/02; F25B31/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732126A
Cited
US711092A
Cited
US1424977A
Cited
US1427053A
Cited
US1575860A
Cited
US1616992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |