US2687020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-temperature refrigeration apparatus
Assignee: Lanteris Space LLC
•
Filing: 1952-04-21
•
Granted: 1954-08-24
•
Expires: 1972-04-21
Abstract
No abstract record available.
Inventors
- 👤 Lloyd A Staebler
- 👤 Banerji Sidhartha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:08
CPC Classifications
F; F25; F25B; F25B5/00; F25B5/04; F25B2600/00; F25B2600/25; F25B2600/2511
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2000787A
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US2072347A
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US2072567A
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US2306480A
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US2101656A
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US2133949A
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US2208267A
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US2285946A
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US2589551A
Cited
US2603069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |