Frank G. Pirrallo — 7 Patents at General Motors

Frank G. Pirrallo has been granted 7 US patents while listed as an inventor at General Motors. The first was granted in 1985 and the most recent in November 2001. Frank G. Pirrallo ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Frank G. Pirrallo in Fraser, MI, US.

Patents per Year

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
6318515	Hold down spring for a drum brake	—	2001-11-20	$3,683,000
5368139	Drum brake shoe hold down nail and spring retainer	Gregory Hickey	1994-11-29
5306059	Bowling ball handling apparatus	—	1994-04-26
5280800	Removable one piece walker seat	—	1994-01-25
5071202	Cam modulator for anti-lock braking system apparatus and method	Alroy G. Fabris, Guruswamy Umasankar, Bruce S. Shimanovski, Prakash C. Shrivastava	1991-12-10
4781754	Rapid solidification of plasma sprayed magnetic alloys	Vito W. Soranno, Thomas Hubert Van Steenkiste	1988-11-01
4509579	Apparatus for fluidizing a particulate bed within a flask	—	1985-04-09