Patent US2138885A successfully refreshed from Google Patents.
US2138885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerated insulation
Assignee: Individual
•
Filing: 1936-04-20
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Granted: 1938-12-06
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Expires: 1956-04-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:17
CPC Classifications
F; F25; F25D; F25D11/00; F25D11/006; F25D2201/00; F25D2201/10; F25D2201/14; Y; Y02; Y02B; Y02B40/00; Y10; Y10S; Y10S220/00; Y10S220/902; Y10S62/00; Y10S62/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-12-05 | 1942-06-06 | 1942-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-12-05 | 1946-06-06 | 1946-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-12-05 | 1950-06-06 | 1950-12-06 | $7700.00 | Window Closed / Lapsed |