US2083436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system
Assignee: Individual
•
Filing: 1931-08-08
•
Granted: 1937-06-08
•
Expires: 1951-08-08
Abstract
No abstract record available.
Inventors
- 👤 Bothezat George De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:59
CPC Classifications
F; F28; F28D; F28D5/00; Y; Y10; Y10S; Y10S261/00; Y10S261/34
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) | 1940-06-07 | 1940-12-07 | 1941-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-06-07 | 1944-12-07 | 1945-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-06-07 | 1948-12-07 | 1949-06-08 | $7700.00 | Window Closed / Lapsed |