US2201314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system
Assignee: ARTHUR H BOETTCHER
•
Filing: 1936-10-21
•
Granted: 1940-05-21
•
Expires: 1956-10-21
Abstract
No abstract record available.
Inventors
- 👤 Frank P Illsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:17
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/02; F01P3/00; F01P3/20; Y; Y10; Y10S; Y10S220/00; Y10S220/32; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/7836; Y10T137/8158; Y10T137/8326
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) | 1943-05-21 | 1943-11-20 | 1944-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-05-21 | 1947-11-20 | 1948-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-05-21 | 1951-11-20 | 1952-05-21 | $7700.00 | Window Closed / Lapsed |