Patent US3033009A successfully refreshed from Google Patents.
US3033009A
Expired / Lapsed
US
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Multiple compressor system for refrigeration installation
Assignee: Worthington Corp
•
Filing: 1960-01-08
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Granted: 1962-05-08
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Expires: 1980-01-08
Abstract
No abstract record available.
Inventors
- 👤 Richard K Berger
- 👤 Andrew J Nicholas
- 👤 Linwood A Pickle
- 👤 Augustus J Van Newenhoven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:43
CPC Classifications
F; F25; F25B; F25B31/00; F25B31/002; F25B2341/00; F25B2341/001; F25B2341/0016; F25B2400/00; F25B2400/07; F25B2400/075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2128388A
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US2076332A
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US2869775A
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US2738652A
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US2956730A
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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) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |