US2363526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Individual
•
Filing: 1940-07-31
•
Granted: 1944-11-28
•
Expires: 1960-07-31
Abstract
No abstract record available.
Inventors
- 👤 James C Hobbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:20
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/06; F28B; F28B1/00; F28B1/02; F28D7/16; F28D7/1607; F28F; F28F9/00; F28F9/02; F28F9/0219; F28F9/0236; F28F9/22; F28F2009/222; F28F2009/226; F28F2230/00; F28F2275/00; F28F2275/20; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/401
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1947-11-28 | 1948-05-29 | 1948-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-11-28 | 1952-05-29 | 1952-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-11-28 | 1956-05-29 | 1956-11-28 | $7700.00 | Window Closed / Lapsed |