Patent 1, and other patents pending " you can look at the chart below and determine that the earliest date of dating oasis site item would be aboutand had a term from to 17 Yearsso that is the approximate window of time of your widget.Parts found in many British clocks may be marked with one or more British patent numbers or registered design numbers.This period seems to me the one motivating most people to try and avoid paying the PAF price but hoping for the PAF tone... Mostly all automated winding and mostly all 7.5's 68-74 Patent sticker T Tops... These seem to be the ones that make people realize Pat # are not the same as PAFs...Not as dead set at 7.5 ohms as later pickups so still a few that sounded pretty close to right... 74-84 (at least) Patent number stamped pickups (my 84 Korina Explorer had them)... I would guess there are some good ones but mine were tone dead and as terrible as any I have heard... These are the facts I gathered as I tried to beat the devil and avoid paying for PAF's...I have no idea if the dates are accurate but few people covet these pickups so I would assume the details will be harder to find as time goes on and not easier...Gibson is simply the worst company in the world for record keeping and sticking to rules...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.
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.Beecham's Patent Pills antique wood pill box, c A detailed Patent Technology Monitoring Team report, titled Issue Dates and Patent Numbers Sincewhich contains first patent numbers and the day of issue for patents issued sincealso may be of interest.Installed on my '75 deluxe is a full size 'bucker in the bridge position. well here's another spin, i just noticed that the mini hum that came out has the same patent number. You can't date them to year, except if you take it out of a '75, odds are it is a '75. Les Paul) in the 1950's and was for a bridge assembly.This date is important because it is the date from which the patent grantee may enforce the validity of the patent. For 5146634, retrieve the application filing date, which is provided under the "Abstract" section on the left-hand side (September 11, 1991).Retrieve the patent issue date, which is provided near the top of the page on the right-hand side directly under the patent number.