Inventor
SIEGLER MARK D
US9 patents
Patents
9 patentsUS6078159AJun 20, 2000
Method and apparatus for programming a logic board from switching power
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US5743046AApr 28, 1998
Jack shaft door garage operator
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US6376832B1Apr 23, 2002
Method and apparatus for determining a position of a movable barrier
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US5299678AApr 5, 1994
Limit switch mechanism for garage door opener
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US6495821B1Dec 17, 2002
Method and apparatus for determining a position of a movable barrier
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USRE40001EJan 15, 2008
Jack shaft garage door operator
CHAMBERLAIN GROUP INC16 citations83
US5176582AJan 5, 1993
Chain guide for overhead door opener
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US6956199B2Oct 18, 2005
Method and apparatus for determining a position of a movable barrier
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US6878927B2Apr 12, 2005
Method and apparatus for determining a position of a movable barrier
CHAMBERLAIN GROUP INC3 citations57