John W. Walch — 7 Patents at Trc Acquisition

John W. Walch has been granted 7 US patents while listed as an inventor at Trc Acquisition. The first was granted in 1980 and the most recent in September 1996. John W. Walch ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list John W. Walch in Columbia, MO, US.

Patents per Year

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
5551122	Corded handheld vacuum cleaner	Robert W. Burkhardt, Ricky A. Owens, Dennis J. Mancl	1996-09-03	$174,000
5448794	Corded handheld vacuum cleaner	Dennis J. Mancl	1995-09-12	$139,000
5311638	Cleaning device	Kent J. Furcron	1994-05-17
D346467	Cleaning device	Kent J. Furcron, Gary A. Miller, Ricky A. Owens, Mark Dziersk	1994-04-26
D346247	Cleaning device	Kent J. Furcron, Gary A. Miller, Ricky A. Owens, Mark Dziersk	1994-04-19
D345830	Cleaning device	Kent J. Furcron, Gary A. Miller, Ricky A. Owens, Mark Dziersk	1994-04-05
4200978	Shield for grass trimmer	Edward A. Irelan, Robert L. Bartlett	1980-05-06	$1,331,000