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#5
09-03-2021, 06:39 PM
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The patent number that is on later Hursts (3216274) was issued 11/9/1965. So should have been made before that, or not "too long" after that.
I assume it would have taken some time after the patent was issued for them to get the revised stamping worked into production -- but how long, who knows? (Like the Patent Pending Delco Remy distributor caps that were sold for several years after the patent was already issued.) Neat drawings with the patent app: https://pdfpiw.uspto.gov/.piw?Docid=...iew+first+page https://pdfpiw.uspto.gov/.piw?docid=...6RS=PN/3216274
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Jeff Helms 65 Z16 Survivor 65 Z16 drag car 66 Chevelle L78 unrestored 67 Chevelle L78 unrestored 67 Camaro SS350 Survivor Last edited by jeffschevelle; 09-03-2021 at 06:43 PM. 
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