US2744393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange coil assembly
Assignee: Old Carco LLC
•
Filing: 1953-07-23
•
Granted: 1956-05-08
•
Expires: 1973-07-23
Abstract
No abstract record available.
Inventors
- 👤 Richard L Brugler
- 👤 Sr De Witt Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:12
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB191019575A
Cited
US1626400A
Cited
US2042420A
Cited
US2283928A
Cited
US2158447A
Cited
US2228550A
Cited
US2341962A
Cited
US2637532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |