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For the Inventor, By the Inventor

Boston, MA, United States of America

De De Design, Inc.


USPTO Granted Patents = 1

Forward Citations = 68

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1 inventor (with patents filed for the assignee):

goldMedal David Charles Rogers (1 out of 54 patents)


1 patent:

1. 5734994 - Ventilated safety helmet with progressively crushable liner (1998-04-07),
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USPTO Data Jan 1 1976 - Dec 23 2025

1 Patents

#714 in Boston, MA

#6,481 in Massachusetts

#133,811 in US

...
Boston, MA, United States of America

De De Design, Inc.

Forward Citations = 68

1 inventor:

goldMedal David Charles Rogers (1 out of 54 patents)

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