Thomas C. Leach has been granted 10 US patents while listed as an inventor at Square D . The first was granted in 1992 and the most recent in February 1999. Thomas C. Leach ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list Thomas C. Leach in Cedar Rapids, IA, US.
Patents per Year Patents granted per year, 1992 to 1999 Bar chart with a peak of 3 patents in 1997. peak 3 1992: 2 patents 1992 1994: 1 patents 1994 1995: 2 patents 1995 1996: 1 patents 1996 1997: 3 patents 1997 1999: 1 patents 1999
Issued Patents All Time
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Showing 1–10 of 10 patents
Patent # Title Co-Inventors Date
5870276 Electrical power distribution device with elevated removable load center Larry D. Polston , Gary D. Fornash 1999-02-09
5657200 Tubular bus arrangement for power transport in electrical devices James P. Mills, Jr. , Robert J. Cooper 1997-08-12
5638256 Combination service entrance device for temporary and permanent use Kenneth L. Uhlman , Larry D. Polston , James P. Mills, Jr. 1997-06-10
5627724 Combination service entrance device with provisions for distributing power to multiple service disconnects James P. Mills, Jr. 1997-05-06
5481235 Conducting spring for a circuit interrupter test circuit James Arthur Heise , Duane Lee Turner , Jeffrey M. Kaufman 1996-01-02
5446431 Ground fault module conductors and base therefor Duane Lee Turner , Darryl Carter 1995-08-29
5403974 Interlocking wireway assembly for electrical distribution devices Marvin L. Linder 1995-04-04
5359161 Non-linear spring for circuit interrupters Steven A. DeCook 1994-10-25
5120913 Torque limited drawout mechanism for circuit device James B. MacBeth 1992-06-09
5097382 Circuit device racking mechanism Marvin L. Linder , Donald H. Haase 1992-03-17