This is a fascinating lot of Vintage invention Blueprints. Lot includes approximately 100 blueprints along with notes, memos, and other project papers. They are from BJ Electronics a division of the Borg-Warner Corporation in Santa Ana California. The dates put these from the 1950s.
Some of the plans appears to be for a Vibrotron Pressure Transducer.
Please see pictures for more details.
misc- 116