Alex Zelczer — 13 Patents at Abco Consulting

Alex Zelczer has been granted 13 US patents while listed as an inventor at Abco Consulting. The first was granted in 1985 and the most recent in February 2007. Alex Zelczer ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list Alex Zelczer in Cambridge, OH, US.

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #	Title	Co-Inventors	Date
7178545	Modulating bypass control system and method	Mark Votaw, Joe Ramunni	2007-02-20
6817378	Fluid flow control damper assembly	—	2004-11-16
6698445	Fluid flow control damper assembly	—	2004-03-02
6564819	Fluid flow control damper assembly	—	2003-05-20
6105927	Fluid flow control damper assembly and method	Ruth Zelczer	2000-08-22
5553498	Pipe and duct run locator	Ruth Zelczer	1996-09-10
5458148	Fluid flow control damper assembly and method	Ruth Zelczer	1995-10-17
5170986	Flow control bladders for zone control apparatus	Ruth Zelczer	1992-12-15
4848654	Zone control and smoke damping apparatus for central heating and/or cooling systems	Ruth Zelczer	1989-07-18
4742956	Zone control apparatus for central heating and/or cooling systems	—	1988-05-10
4702412	Zone control apparatus for central heating and/or cooling systems	Ruth Zelczer	1987-10-27
4600144	Zone control apparatus for central heating and/or cooling systems	—	1986-07-15
4545524	Zone control apparatus for central heating and/or cooling systems	—	1985-10-08

Alex Zelczer — 13 Patents

Issued Patents All Time

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