Wilhelmina Bertha Packard

Communications
Officer
Age:
61
Birthplace:
Whippany, New Jersy
Expertise:
Wilhemina
Packard (Mrs.) Research assistant and reputed mistress of Dr. Mahlon Loomis from
July to November of 1875. Developed
the galvanometer, and with the help of Dr. Loomis, the concept of Hertzian wave
application. Worked as research
assistant and eventually as a full partner to Dr. Nathan Stubblefield,
developing the vibrating telephone in 1888.
Married to Dr. Stubblefield, 1891. Secured
congressional appropriation of $50,000 for further development of work.
Appropriation was never forthcoming, for reasons known only to Congress.
Divorced Dr. Stubblefield, 1893. Traveled
and worked with Guglielmo Marconi, 1898-1901.
Instrumental in December transatlantic broadcaster.
Worked as research fellow for Victor Talking Machine, 1902-04.
Developed sodion nonregenerative detector, 1903.
Worked for Atwater-Kent 1904-07. Helped
develop radak type R-4 regenerative circuit and holds sole patent for the
orthosonic circuit. Worked for
Magnavox 1907-12. Developed AC-3-C
Battery.
Background:

