
These became in the head under the Fender logo stamped.e.g.PAT, 2,573,254 2,968,204 3,143,028 2,976,7042,573,254 for pickup and bridge combination.2,968,204 for the single coil pickup patent awarded in 1961 under other for Jaguar, Stratocaster, Duosonic.3,143,028 the patent granted in August 1964 for Fender's adjustable neck construction.2,976,755 for the split coil pickup design. On some Telecasters at the bridge between the pickup and the saddles.Patent numbersBetween 19, were added several patent numbers to the models. Although there have beenperiods in which major changes occurred as the acquisition of Fender by CBS, and thetransition from CBS Fender to the current owner (Fender Musical Instruments Corporation),most models are in general not changed.At the Stratocasters from the early fifties the serial numbers were stamped on the back vibratocover. Usually, the production date is stamped or written is on the heel of the neck.To read this it is necessary to unscrew the neck from the body.Most specifications for the Fender guitars are hardly changed.
