CH304147A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Recuperative heat exchanger.
Assignee: Power Jets Res & Dev Ltd
•
Filing: 1952-03-29
•
Granted: —
•
Expires: 1972-03-29
Abstract
No abstract record available.
Inventors
- 👤 Power Jets Research De Limited
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-10-23 22:58
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/0066; F28D7/02; F28D7/022
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.