US3380518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finned heat exchanger
Assignee: Individual
•
Filing: 1966-02-15
•
Granted: 1968-04-30
•
Expires: 1986-02-15
Abstract
No abstract record available.
Inventors
- 👤 Canteloube Andre
- 👤 Taverna Italo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:55
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/12; F25; F25B; F25B39/00; F25B39/02; F25B39/04; F28F1/00; F28F1/10; F28F1/12; F25B2339/00; F25B2339/04; F25B2339/043
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3273637A
Cited
FR1212813A
Cited
FR1191954A
Cited
US3135320A
Cited
US3224503A
Cited
US3265127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |