US3015475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylindrical heat exchanger
Assignee: US Philips Corp
•
Filing: 1958-12-04
•
Granted: 1962-01-02
•
Expires: 1978-12-04
Abstract
No abstract record available.
Inventors
- 👤 Meijer Roelf Jan
- 👤 Hermans Matthias Leonardus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:10
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/053; F02G1/055; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/357; Y10S165/358
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |