Craig S. Aizman

Follow

Person

St. Louis Park, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Ergonomic extendable/retractable ladder
- Patent number 8,387,753
- Issue date Mar 5, 2013
- Core Distribution, Inc.
- Mitchell I. Kieffer
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
Telescoping ladder rung
- Patent number D593685
- Issue date Jun 2, 2009
- Core Distribution, Inc.
- Mitchell I. Kieffer
- D25 - Building units and construction elements
Information Patent Grant
Extending ladder and associated manufacturing methods
- Patent number 7,048,094
- Issue date May 23, 2006
- Core Distribution, Inc.
- Mitchell I. Kieffer
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
Extending ladder and associated manufacturing methods
- Patent number 6,883,645
- Issue date Apr 26, 2005
- Core Distribution, Inc.
- Mitchell I. Kieffer
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
Extending ladder and associated manufacturing methods
- Patent number 6,708,800
- Issue date Mar 23, 2004
- Core Distribution, Inc.
- Mitchell I. Kieffer
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS

Patents Applicationslast 30 patents

Information Patent Application
ERGONOMIC EXTENDABLE/RETRACTABLE LADDER
- Publication number 20080000723
- Publication date Jan 3, 2008
- Mitchell I. Kieffer
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Application
Extending ladder and associated manufacturing methods
- Publication number 20050139424
- Publication date Jun 30, 2005
- Core Distribution, Inc.
- Mitchell I. Kieffer
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Application
Extending ladder and associated manufacturing methods
- Publication number 20040144596
- Publication date Jul 29, 2004
- Mitchell I. Kieffer
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Application
Extending ladder and associated manufacturing methods
- Publication number 20040020718
- Publication date Feb 5, 2004
- Mitchell I. Kieffer
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS