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(1 - 3 of 3)
Title
Magnetic Recording and Reproducing Device with Means to Prevent Accidental Erase of Record Medium
Creator
Vagtborg, Harold A.
Date
1949-04-05
Description
Sponsorship: Armour Research Foundation of Illinois Institute of Technology
United States Patent
Title
Electrical Musical Instrument
Creator
Vagtborg, Harold A.
Date
2012-03-20, 1951-04-17
Description
Sponsorship: Armour Research Foundation of Illinois Institute of Technology
United States Patent
Title
Magnetic Recording Device
Creator
Vagtborg, Harold A.
,
Camras, Marvin
,
Zenner, Raymond E.
Date
1947-10-28
Description
Sponsorship: Armour Research Foundation
United States Patent
Query
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mods_name_creator_namePart_mt:"Vagtborg, Harold A."
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Type
Patent
(2)
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Technical report
(1)
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Date
1946
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1956
(5 years)
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Format: 2024/12/12
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Creator
Vagtborg, Harold A.
(3)
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Rights
no copyright - united states
(3)
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