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DE664983C Expired / Lapsed DE ⏱️ 0.0 years remaining

Oscillator or resonator designed as a piezoelectric crystal with low radiation damping

Assignee: Telefunken AG
•
Filing: 1932-10-13
•
Granted: 1938-10-01
•
Expires: 1952-10-13
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Abstract

No abstract record available.

Inventors

  • 👤 Hans Otto Roosenstein
  • 👤 Dr Wilhelm Runge

Bibliographic Details

Application Number —
Jurisdiction DE
Data Source google_patents
Last Synchronized 2026-11-09 08:57
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/05; H03H9/09; G; G04; G04F; G04F5/00; G04F5/04; G04F5/06; G04F5/063; H03H9/0504; Y; Y10; Y10S; Y10S116/00; Y10S116/18; Y10T; Y10T29/00; Y10T29/42

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