Patent US2273835A successfully refreshed from Google Patents.
Patent US2470655A successfully refreshed from Google Patents.
US2470655A
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Cooling and lubrication of compressors
Assignee: Allis Chalmers Corp
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Filing: 1944-06-12
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Granted: 1949-05-17
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Expires: 1964-06-12
Abstract
No abstract record available.
Inventors
- 👤 Melvin C Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:36
CPC Classifications
F; F25; F25B; F25B31/00; F25B31/006; F04; F04C; F04C29/00; F04C29/0007; Y; Y10; Y10S; Y10S418/00; Y10S418/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2303136A
Cited
US1778447A
Cited
US1834976A
Cited
CH153292A
Cited
GB409638A
Cited
US2059856A
Cited
GB502690A
Cited
US2363273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |