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Cox Engine of The Month
February-2024
1/2A Nut's

"RC Speed Boat Power Drive TD .020"

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L.M. Cox Patent Number(s) Empty L.M. Cox Patent Number(s)

Post  Casual Flyer Tue Jun 07, 2022 7:03 pm

Would like to look up Cox patents at the U.S. Patent office.  Anyone know any Cox patent number(s)?  Apparently any patent prior to 1975 can only be searched by number, issue date or US Classification.
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Post  Admin Tue Jun 07, 2022 9:42 pm

There's some listed here: https://www.coxengineforum.com/h24-instruction-sheets#patents

If you track down more, please let me know as I'd like to add them to the list.

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L.M. Cox Patent Number(s) Empty I Found the Listed Patents

Post  Casual Flyer Tue Jun 07, 2022 9:56 pm

I found the patents listed on the "instruction" sheet. I'll looking for patents related to Cox model engines. But thanks for the response and info.
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Post  gkamysz Wed Jun 08, 2022 9:01 am

I don't believe there were any patents on the engine designs. There was nothing unique about the designs. Cox was successful in manufacturing to a consistent quality and good price.
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