Equipment and Improvements (Tables)

3 Months Ended

Oct. 31, 2018

Property, Plant and Equipment [Abstract]

Equipment and improvements

	October 31		July 31
Furniture and fixtures	$	71,513	$	71,513
Machinery and equipment		197,099		195,813
Transportation equipment		11,293		11,293
Building improvements		4,456		4,456
		284,361		283,075
Less accumulated depreciation
and amortization		241,896		237,945
	$	42,465	$	45,130
Depreciation and amortization  expense:
	$	3,951	$	15,802