DE659330C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Water column machine with two circular oscillating pistons
Assignee: Individual
•
Filing: —
•
Granted: 1938-04-30
•
Expires: 1955-04-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-05 08:13
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/12; F15B15/125
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.