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Marconi Wireless Telegraph Co America

Marconi Wi

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US1238869A	Valve-receiver for wireless signals.	Expired / Lapsed	1917-03-13	1917-09-04	0	Details
US954641A	Wireless telegraphy.	Expired / Lapsed	1909-05-15	1910-04-12	0	Details
US954619A	Instrument for detecting electric oscillations.	Expired / Lapsed	1909-01-02	1910-04-12	0	Details
US924168A	Wireless signaling system.	Expired / Lapsed	1905-11-27	1909-06-08	0	Details
US803684A	Instrument for converting alternating electric currents int…	Expired / Lapsed	—	1905-11-07	0	Details