US3045979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Staggered serpentine structure for heat exchanges and method and means for making the same
Assignee: Modine Manufacturing Co
•
Filing: 1956-03-07
•
Granted: 1962-07-24
•
Expires: 1976-03-07
Abstract
No abstract record available.
Inventors
- 👤 Homer D Huggins
- 👤 James D Morse
- 👤 Harold H Dolister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:31
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/08; F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/126; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/442; Y10S165/443; Y10S165/446; Y10S165/447; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |