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AU1788329A - An improved automatic gripper for extension ladders - Google Patents

An improved automatic gripper for extension ladders

Info

Publication number
AU1788329A
AU1788329A AU17883/29A AU1788329A AU1788329A AU 1788329 A AU1788329 A AU 1788329A AU 17883/29 A AU17883/29 A AU 17883/29A AU 1788329 A AU1788329 A AU 1788329A AU 1788329 A AU1788329 A AU 1788329A
Authority
AU
Australia
Prior art keywords
improved automatic
extension ladders
automatic gripper
gripper
ladders
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
AU17883/29A
Inventor
Edward Kennett Charles
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of AU1788329A publication Critical patent/AU1788329A/en
Expired legal-status Critical Current

Links

AU17883/29A 1929-01-16 An improved automatic gripper for extension ladders Expired AU1788329A (en)

Publications (1)

Publication Number Publication Date
AU1788329A true AU1788329A (en) 1930-01-28

Family

ID=

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895660A (en) * 1956-05-09 1959-07-21 Thomas J O'keefe Stop hook for extension ladders
AU639362B2 (en) * 1990-09-07 1993-07-22 W.R. Carpenter & Co. Limited A suspendible extension ladder assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895660A (en) * 1956-05-09 1959-07-21 Thomas J O'keefe Stop hook for extension ladders
AU639362B2 (en) * 1990-09-07 1993-07-22 W.R. Carpenter & Co. Limited A suspendible extension ladder assembly

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