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公开(公告)号:US20210300509A1
公开(公告)日:2021-09-30
申请号:US17346927
申请日:2021-06-14
申请人: Ross Hoffmann
发明人: Ross Hoffmann
摘要: An attachment for a ladder includes a pair of spaced rails secured together by at least one rung and a removable pin at an end for securing the attachment to a standard ladder.
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公开(公告)号:US11034420B2
公开(公告)日:2021-06-15
申请号:US16275196
申请日:2019-02-13
申请人: Ross Hoffmann
发明人: Ross Hoffmann
摘要: An attachment for a ladder includes a pair of spaced rails secured together by at least one rung and a removable pin at an end for securing the attachment to a standard ladder.
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公开(公告)号:US20200370372A1
公开(公告)日:2020-11-26
申请号:US16993027
申请日:2020-08-13
申请人: Ross Hoffmann
发明人: Ross Hoffmann
摘要: A safety rescue attachment for a ladder includes a foldable safety extension having a ladder engagement clamp on a terminal end thereof.
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公开(公告)号:US20200255107A1
公开(公告)日:2020-08-13
申请号:US16275196
申请日:2019-02-13
申请人: Ross Hoffmann
发明人: Ross Hoffmann
摘要: An attachment for a ladder includes a pair of spaced rails secured together by at least one rung and a removable pin at an end for securing the attachment to a standard ladder.
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公开(公告)号:US20200256125A1
公开(公告)日:2020-08-13
申请号:US16662926
申请日:2019-10-24
申请人: Ross Hoffmann
发明人: Ross Hoffmann
摘要: An attachment for a ladder includes a pair of rung tubes for engaging the hollow rungs of a ladder secured together by at least one end tube.
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