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Patent US2661145A successfully refreshed from Google Patents.
US2661145A
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Antisurge control for refrigeration compressors
Assignee: Guardite Corp
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Filing: 1947-03-11
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Granted: 1953-12-01
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Expires: 1967-03-11
Abstract
No abstract record available.
Inventors
- 👤 Arnold H Heineman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:12
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/02; F25B49/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1154959A
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US1229500A
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US1280811A
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US1830022A
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US1833064A
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US2409533A
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US2470565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |