Cambridge, Massachusetts
United States
9
2016-12-08
The entities that hold a legal rights for patent applications filed by inventor Walker Daniel:
Daniel Walker from Cambridge, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Descent assist device for powered ascenders
#2 | 2016-03-31Locking joint for collapsible ladders and other structures
#3 | 2015-02-05Descent assist device for powered ascenders
#4 | 2013-02-14Locking joint for collapsible ladders and other structures
#5 | 2008-08-28Powered rope ascender and portable rope pulling device
#6 | 2008-06-05MULTIPLE LINE POWERED ROPE ASCENDER AND PORTABLE HOIST
#7 | 2008-01-24Powered rope ascender and portable rope pulling device
#8 | 2007-08-23DEVICE TO ENABLE ROPE PULLING FUNCTIONALITY USING A ROTATIONAL POWER SOURCE
#9 | 2006-12-07Powered rope ascender and portable rope pulling device
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