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Patent number dating
It was in and around 1974 that they went from using stickers on the pickup to instead stamping or engraving that info right into the metal of the pickup frame. So, if I've got an SG that has pat # stickers, not engraving on the pups, it's probably safe to say it's '74 or earlier? I had looked in 2 different 'Blue Books", and they were both different. The early ones had a PAF sticker because at first they only had a patent "filing number." Gibson: R8 '14, R9 BRZ '03, R8 '02, '89 Chet Atkins SST Fender: '57 Strat RI USA '82, '83, '03, '07, '05 Custom Shop Marshall: '71 JMP50, '80 2204, '84 2204, '88 1987S, '97 1987X WHITE, '99 JTM45, '06 2061X Marshall: '68 4x12 Basketweave, '74 4x12 Creambacks, '77 2x12 w/Alnico Blues, '83 2x12, '84 2x12, '88 4x12 Fender: '63 Princeton, '67 SFDR, '77 SFPR, '79 SFPR Transportation: 2014 Corvette Stingray Z51, 2011 Jeep Patriot Given that Big Al has spoken I am reluctant to because to date I have not seen him make a mistake yet regarding pickups...
As of 62 Pat # stickers in use on all pickups and continued with the slightly shorter magnet...
Cloudy as to the changes from 62-67 but several small tweaks that changed the magnets as well as the way they were wound...
or maybe more relavently, what kind of 'bucker is it? The patent # is for a bridge and Gibson seems to have used it on Humbuckers to discourage looking up patent info. The patent number 2737842 was granted to Lester Polfuss (a.k.a.
Further (as Big Al notes), Gibson used that number to discourage competitors from copying the humbucker patent that was granted to Seth Lover, though, as far as I know, that humbucker was never really made into production. Basically, the patent number for tracking is not the way to approach the dating question.
Beyond that they just apologize for being no good at record keeping...
Close is the best you will ever do from 65-85 so don't worry too much... I have a question about the pat no stamped pickups. Can you describe "tone dead and terrible" - I thought mine didn't sound too bad, got a good Angus Young tone.You now have both the application filing date and the issue date of the patent number.Byron Berger is a licensed attorney and registered civil engineer.I have seen guitars discontinued and still released, models made that never were, parts spread over different years and everything else...Gibson's most popular answer is to date the pots and if they are stock you will have your answer...Emile Berliner Gramophon - Copy of Patent dated Parts found in many American clocks may be marked with one or more United States patent numbers.Use of this website constitutes acceptance of the Antique Clocks Price Guide. The first is the application filing date, which is the date on which the United States Patent & Trademark Office receives a completed patent application.The application filing date is important because it is the date from which a patent's validity is calculated. Click the "Search" link under the "Patents" column on the left-hand side of the screen.The humbucker was based more on a previous patent granted in 1938 to C. Just to add a little more info, the infamous wrong patent number 2737842 was basically used with most anything the qualified as some kind of HB pickup, the mid 60s, the post '67 T tops, then some of the later stuff such as the Shaws and the Dirty Fingers.For a while that number was on the stickers on the pickups that followed the PAFs, so from around 1962ish or so to about 1974. I've got a pair that I'm not too crazy about, and if I could unload them onto some unsuspecting e Bay buyer and get some $$ for some more Stew Mac tools... They really helped me out with an SG Special I have. That number is just the patent number given to Gibson after the actual granting of a "patent registration".