US2504528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration apparatus
Assignee: Lanteris Space LLC
•
Filing: 1944-09-06
•
Granted: 1950-04-18
•
Expires: 1964-09-06
Abstract
No abstract record available.
Inventors
- 👤 William C Hume
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:49
CPC Classifications
F; F25; F25B; F25B31/00; F25B31/002; F04; F04B; F04B39/00; F04B39/02; F04B39/0223; F04B39/023; F04B39/0261; F25B31/006; Y; Y10; Y10S; Y10S417/00; Y10S417/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US661184A
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US918194A
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US957597A
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US1576571A
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US1611030A
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US1969999A
Cited
US1974421A
Cited
US2066177A
Cited
US2312596A
Cited
US2382716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-17 | 1953-10-17 | 1954-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-17 | 1957-10-17 | 1958-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-17 | 1961-10-17 | 1962-04-18 | $7700.00 | Window Closed / Lapsed |