Patent US4173959A successfully refreshed from Google Patents.
Patent US1190938A successfully refreshed from Google Patents.
US3047271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brazed plate and ruffled fin heat exchanger
Assignee: Stewart Warner Corp
•
Filing: 1958-08-07
•
Granted: 1962-07-31
•
Expires: 1978-08-07
Abstract
No abstract record available.
Inventors
- 👤 Jack R Burtt
- 👤 Raymond D Palino
- 👤 Staiger Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:42
CPC Classifications
F; F28; F28D; F28D9/00; F28D9/0062; F28D9/0068; F28F; F28F2250/00; F28F2250/10; F28F2250/102; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/387; Y10S165/391; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE112102C
Cited
GB159933A
Cited
US2154217A
Cited
US2782010A
Cited
US2614517A
Cited
US2686957A
Cited
US2796239A
Cited
US2830798A
Cited
US2869835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |