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For the Inventor, By the Inventor

Roanoke, VA, United States of America

American Balance Corporation


USPTO Granted Patents = 2

Forward Citations = 56

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3 inventors (with patents filed for the assignee):

goldMedal Earl L Dodson (2 out of 2 patents)

silverMedal Frederick P Strobl, Jr (1 out of 13 patents)

bronzeMedal Garry P Haltof (1 out of 10 patents)


2 patents:

1. 4949425 - Spring loaded block and tackle window sash balance assembly (1990-08-21),
2. 4763447 - Torque actuated brake mechanism for spring balanced window sash (1988-08-16),
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USPTO Data Jan 1 1976 - Sep 29 2026

2 Patents

#40 in Roanoke, VA

#1,738 in Virginia

#94,730 in US

Roanoke, VA (US)
Roanoke, VA, United States of America

American Balance Corporation

Forward Citations = 56

3 inventors:

goldMedal Earl L Dodson (2 out of 2 patents)

silverMedal Frederick P Strobl, Jr (1 out of 13 patents)

bronzeMedal Garry P Haltof (1 out of 10 patents)

Please report any incorrect information to [email protected]
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