AF

Alfred A. Frankenberg

RC Robertshaw Controls: 10 patents #20 of 302Top 7%
Overall (All Time): #525,283 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
6182684 Bellows balanced valve 2001-02-06
5494255 Solenoid activated exhaust gas recirculation valve Earl Pearson 1996-02-27
5460146 Solenoid activated exhaust gas recirculation valve 1995-10-24
4753537 Digital clock construction, pinion gear therefor and methods of making the same 1988-06-28
4653932 Digital clock construction, pinion gear therefor and methods of making the same 1987-03-31
4505106 Exhaust system for an internal combustion engine, burn-off unit and methods therefor Douglas R. Scott 1985-03-19
4449362 Exhaust system for an internal combustion engine, burn-off unit and methods therefor Douglas R. Scott 1984-05-22
4241872 Pneumatically operated thermostat construction and method of making the same 1980-12-30
4237771 Pneumatically operated actuator and method of making the same 1980-12-09
4192453 Thermostat construction and method of making the same 1980-03-11