FR641461A
Expired / Lapsed
FR
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Cathodic oscillograph for the study of low and medium frequencies
Assignee: Heliodoro Tellez-Plasencia
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Filing: 1927-09-14
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Granted: 1928-08-04
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Expires: 1947-09-14
Abstract
No abstract record available.
Inventors
- 👤 Heliodoro Tellez-Plasencia
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-23 16:00
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/121
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