US2792200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toroidal type heat exchanger
Assignee: Modine Manufacturing Co
•
Filing: 1952-03-15
•
Granted: 1957-05-14
•
Expires: 1972-03-15
Abstract
No abstract record available.
Inventors
- 👤 Homer D Huggins
- 👤 Clyde S Simpelaar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:36
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/02; F28F3/025; F28D; F28D9/00; F28D9/0012; F28D9/0018; F28D21/00; F28D2021/0019; F28D2021/0021; F28D2021/008; F28D2021/0082; F28F2240/00; F28F2275/00; F28F2275/18; F28F2280/00; F28F2280/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
AT80079B
Cited
US1824729A
Cited
US2143269A
Cited
GB488571A
Cited
US2350784A
Cited
US2367223A
Cited
US2368814A
Cited
US2429508A
Cited
US2547789A
Cited
GB636839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-13 | 1960-11-12 | 1961-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-13 | 1964-11-12 | 1965-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-13 | 1968-11-12 | 1969-05-14 | $7700.00 | Window Closed / Lapsed |