% Expired Patents = 100.0

Forward Citations = 68

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2 inventors (with patents filed for the assignee):

William R Michalson (1 out of 9 patents)

Bruce S Lavoie (1 out of 1 patent)

1 patent: Sort by Forward Citations

#19 in Northborough, MA

#6,597 in Massachusetts

#136,739 in US

Keyhold Engineering, Inc.

Forward Citations = 68

2 inventors:

William R Michalson (1 out of 9 patents)

Bruce S Lavoie (1 out of 1 patent)

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