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Simi Valley, CA, United States of America

Herman M Drees

USPTO Granted Patents = 4

Average Co-Inventor Count = 2.4

ph-index = 4

Forward Citations = 194(Granted Patents)

Location History:

Marstons Mills, MA (US) (1979)
Simi Valley, CA (US) (1991 - 1994)

Company Filing History:

Aerovironment, Inc.

2 out of 832,843

Other

patents

Years Active: 1979-1994

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4 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5297759 - Rotary aircraft passively stable in hover (1994-03-29),

2. 5082079 - Passively stable hovering system (1992-01-21),

3. 5070955 - Passively stable hovering system (1991-12-10),

4. 4180367 - Self-starting windmill energy conversion system (1979-12-25),

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