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US2891391A
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Refrigerated hermetically sealed motors
Assignee: Copeland Industrial LP
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Filing: 1957-08-26
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Granted: 1959-06-23
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Expires: 1977-08-26
Abstract
No abstract record available.
Inventors
- 👤 Erich J Kocher
- 👤 Whitney I Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:36
CPC Classifications
F; F25; F25B; F25B43/00; F25B43/04; F25B43/043; F04; F04D; F04D25/00; F04D25/02; F04D25/06; F04D29/00; F04D29/58; F04D29/5806; F25B1/00; F25B1/04; F25B1/053; F25B31/00; F25B31/006; F25B31/008
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) | 1962-06-22 | 1962-12-22 | 1963-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-22 | 1966-12-22 | 1967-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-22 | 1970-12-22 | 1971-06-23 | $7700.00 | Window Closed / Lapsed |