Patent US3487827A successfully refreshed from Google Patents.
Patent US2250325A successfully refreshed from Google Patents.
US2250325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal device
Assignee: Individual
•
Filing: 1938-10-12
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Granted: 1941-07-22
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Expires: 1958-10-12
Abstract
No abstract record available.
Inventors
- 👤 Eugene L Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:52
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/02; A47; A47G; A47G9/00; A47G9/02; A47G9/0207; A47G9/0215; B; B44; B44C; B44C5/00; B44C5/06; H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/342; A61F2007/0054; Y; Y10; Y10S; Y10S165/00; Y10S165/044; Y10S165/047; Y10S165/049
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) | 1944-07-21 | 1945-01-20 | 1945-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-07-21 | 1949-01-20 | 1949-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-07-21 | 1953-01-20 | 1953-07-22 | $7700.00 | Window Closed / Lapsed |