Patent US2959935A successfully refreshed from Google Patents.
US2959935A
Expired / Lapsed
US
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Purging arrangement for absorption refrigeration systems
Assignee: Carrier Corp
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Filing: 1958-01-16
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Granted: 1960-11-15
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Expires: 1978-01-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Louis H Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:47
CPC Classifications
F; F25; F25B; F25B43/00; F25B43/04; F25B43/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23093E
Cited
US1561243A
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US1817527A
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US2347544A
Cited
US2598799A
Cited
US2610482A
Cited
US2809497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |