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For the Inventor, By the Inventor

Laguna Hills, CA, United States of America

Stage 5 Enterprises, LLC


USPTO Granted Patents = 3

Forward Citations = 6

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2 inventors (with patents filed for the assignee):

goldMedal Emil Chao (3 out of 7 patents)

silverMedal Charles E Chang (3 out of 75 patents)


3 patents:

1. 10247501 - Tool and method for modifying a magazine lock (2019-04-02),
2. 10239170 - Precision gun smith platform (2019-03-26),
3. 9945631 - Tool and method for modifying a magazine lock (2018-04-17),
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USPTO Data Jan 1 1976 - Jan 13 2026

3 Patents

#30 in Laguna Hills, CA

#16,439 in California

#72,112 in US

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Laguna Hills, CA, United States of America

Stage 5 Enterprises, LLC

Forward Citations = 6

2 inventors:

goldMedal Emil Chao (3 out of 7 patents)

silverMedal Charles E Chang (3 out of 75 patents)

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