WP

Weldon L. Phelps

Caterpillar: 10 patents #570 of 8,398Top 7%
Overall (All Time): #474,298 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5438489 Solenoid driver circuit and diagnostics Steven W. Judy, Stephen J. Morey, April D. Ohlson 1995-08-01
5189940 Method and apparatus for controlling an implement Javad Hosseini, Eric A. Hutchison, Randall M. Mitchell, James E. Schimpf 1993-03-02
5187709 Fault tolerant serial communications network Gregory L. Williamson, Larry E. Kendrick 1993-02-16
4930366 Electrical transmission control mechanism Val G. Boucher, Daniel Ross Ekstrand 1990-06-05
4745552 Anti-spin control apparatus and method Alan L. Stahl, Giles K. Sorrells 1988-05-17
4702358 Clutch brake steering control James P. Mueller 1987-10-27
4661766 Dual current sensing driver circuit John P. Hoffman 1987-04-28
4521856 Multiple threshold wheel slip control apparatus and method Alan L. Stahl 1985-06-04
4373697 Pulse width modulated constant current servo driver 1983-02-15
4361871 Failsafe wheel slip control system and method of operating same Robert G. Miller 1982-11-30
4344139 Method and apparatus for controlling differentially driven wheel slip Robert G. Miller, Allen D. Myers, Alfred W. Sieving 1982-08-10