DE961629C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Heat exchanger
Assignee: CA Parsons and Co Ltd
•
Filing: 1953-04-17
•
Granted: 1957-04-11
•
Expires: 1973-04-17
Abstract
No abstract record available.
Inventors
- 👤 Waldemar Hryniszak
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-08 18:30
CPC Classifications
F; F28; F28F; F28F19/00; F28G; F28G5/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2508119A
Cited
DE844995C
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.