|
US4161997A
(en)
*
|
1975-05-16 |
1979-07-24 |
Norman Thomas W |
Self-storing step structure for vehicular mounting
|
|
FR2408714A1
(fr)
*
|
1977-11-10 |
1979-06-08 |
Andersson Heimer |
Echelle coulissante
|
|
US4182431A
(en)
*
|
1978-03-13 |
1980-01-08 |
Little Giant Industries Inc. |
Combination extension and step ladder rungs therefor
|
|
US4298093A
(en)
*
|
1978-11-16 |
1981-11-03 |
Little Giant Industries, Inc. |
Sawhorse
|
|
US4210224A
(en)
*
|
1979-01-05 |
1980-07-01 |
Kummerlin Nikolaus A |
Longitudinally variable ladder
|
|
US4407045A
(en)
*
|
1981-12-21 |
1983-10-04 |
Boothe Leland H |
Ladder hinge and multi-position locking mechanism therefor
|
|
US4566150A
(en)
*
|
1981-12-21 |
1986-01-28 |
Little Giant Industries, Inc. |
Ladder hinge and multi-position locking mechanism therefor
|
|
US4452833A
(en)
*
|
1982-02-08 |
1984-06-05 |
Consolidated Papers, Inc. |
Paper coating method
|
|
US4697305A
(en)
*
|
1985-02-14 |
1987-10-06 |
Harold R. Wing |
Release mechanism for locking hinge for multi-positioned ladder
|
|
US4951780A
(en)
*
|
1988-08-08 |
1990-08-28 |
Kim Myung H |
Combination ladder and height adjustable scaffold
|
|
DE8814195U1
(de)
*
|
1988-11-12 |
1989-01-26 |
Krause-Werk Gmbh & Co Kg, 6320 Alsfeld |
Gelenkleiter
|
|
US5350038A
(en)
*
|
1993-02-01 |
1994-09-27 |
Lazarus Jonathan F |
Foldable extension ladder and ladder sections therefor
|
|
WO1995023907A1
(en)
*
|
1994-03-01 |
1995-09-08 |
Foxdale Developments Ltd. |
Extensible ladder
|
|
US6129179A
(en)
*
|
1999-09-10 |
2000-10-10 |
Rooney; William V. |
Laterally extensible ladder
|
|
US6857503B2
(en)
*
|
2002-02-07 |
2005-02-22 |
Tricam Industries, Inc. |
Convertible ladder
|
|
US6886659B2
(en)
|
2002-02-07 |
2005-05-03 |
Tricam Industries, Inc. |
Convertible ladder
|
|
US6866117B2
(en)
|
2002-04-05 |
2005-03-15 |
Wing Enterprises, Inc. |
Light weight ladder systems and methods
|
|
US7424933B2
(en)
|
2002-05-28 |
2008-09-16 |
Norman Miller |
Ladder assemblies
|
|
WO2004044365A2
(en)
|
2002-11-11 |
2004-05-27 |
Wing Enterprises |
Combination ladders, ladder components and methods of manufacturing same
|
|
US20050274571A1
(en)
*
|
2004-06-11 |
2005-12-15 |
Dennis Simpson |
Convertible fiberglass ladder
|
|
US8042653B2
(en)
*
|
2005-02-02 |
2011-10-25 |
Werner Co. |
Adjustable work platform
|
|
US20070163838A1
(en)
*
|
2006-01-13 |
2007-07-19 |
Advanced Ladders |
Modular ladder
|
|
USD553757S1
(en)
|
2006-02-11 |
2007-10-23 |
Wing Enterprises, Inc. |
Ladder hinge pair
|
|
GB2471850A
(en)
*
|
2009-07-14 |
2011-01-19 |
Camlock Engineering Ltd |
Support device for use with a vehicle or personnel
|
|
US9309718B1
(en)
*
|
2010-08-05 |
2016-04-12 |
Martin Sinclair Matthew |
Stable stepladder with utility tray
|
|
US8701828B1
(en)
*
|
2010-08-05 |
2014-04-22 |
Martin S Matthew |
Stable stepladder with utility tray
|
|
USD710031S1
(en)
|
2012-11-15 |
2014-07-29 |
Tricam Industries, Inc. |
Step stool
|
|
AU2015101862B4
(en)
*
|
2015-05-12 |
2017-10-12 |
Hartman Pacific Pty Ltd |
Height adjustable ladder
|
|
CN205713939U
(zh)
*
|
2016-05-03 |
2016-11-23 |
厦门新技术集成有限公司 |
一种伸缩梯子的伸缩腿
|
|
KR101767014B1
(ko)
*
|
2016-11-02 |
2017-08-09 |
서동영 |
전동 드라이버로 길이 조절이 가능한 자동 사다리
|
|
USD860476S1
(en)
|
2017-01-04 |
2019-09-17 |
Tricam Industries, Inc. |
Hinge for a multi-position ladder
|
|
USD855833S1
(en)
|
2017-01-04 |
2019-08-06 |
Tricam Industries, Inc. |
Ladder rail
|
|
CN107178303A
(zh)
*
|
2017-03-03 |
2017-09-19 |
厦门新技术集成有限公司 |
一种可变换直梯使用的人字梯
|
|
USD833643S1
(en)
|
2017-07-07 |
2018-11-13 |
Tricam Industries, Inc. |
Integrated ladder tray hook
|
|
US20200040656A1
(en)
*
|
2018-08-02 |
2020-02-06 |
Werner Co. |
Extension Ladder, System and Method
|
|
US11505994B2
(en)
*
|
2018-10-16 |
2022-11-22 |
Tricam Industries, Inc. |
Top cap for multi-position ladder
|
|
CN110359368B
(zh)
*
|
2019-08-02 |
2021-12-24 |
山东汇洋建筑设备有限公司 |
一种利用人体重量凹陷的行走防滑的桥梁检修吊篮
|
|
USD935055S1
(en)
|
2019-08-07 |
2021-11-02 |
Tricam Industries, Inc. |
Hinge for a multi-position ladder
|
|
EP3933164B1
(en)
|
2020-07-02 |
2024-02-14 |
Werner Co. |
Stairway work platform and method
|
|
US12497789B2
(en)
|
2021-03-02 |
2025-12-16 |
Werner Co. |
Interlocking work platform system
|
|
USD940900S1
(en)
|
2021-06-04 |
2022-01-11 |
Richard Godett |
Ladder half-step
|