Patent numbers Various patent numbers were added to the models between 1960 and 1977. These were stamped in the headstock under the Fender logo. | Example: PAT, 2,573,254 2,968,204 3,143,028 2,976,755 DES 187304 2,573,254 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. (Used since 1957 to the Precision Bass) The DES is the serial number. |