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http://www.google.co.uk/patents/US2459437?utm_source=gb-gplus-share
Patent US2459437 - ADJUSTABLE LADDER ATTACHMENTS
ADJUSTABLE LADDER ATTACHMENTS
Francis C. Wilkinson et al
› Overview
Abstract
Drawings
Description
Claims
Patent number
: 2459437
Filing date
: 26 Oct 1945
Issue date
: 18 Jan 1949
Inventors
:
Francis C. Wilkinson
,
Francis C. Wilkinson
Current U.S. Classification
:
182/121
View patent at USPTO
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Referenced by
Citing Patent
Filing date
Issue date
Original Assignee
Title
US4646878
27 Jun 1986
3 Mar 1987
Portable ladder step
US4696373
25 Jul 1986
29 Sep 1987
Two-position ladder platform
Drawings
Drawings
