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Hollow plastic ladder
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Patent number 5,366,051
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Issue date Nov 22, 1994
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R. D. Werner Co., Inc.
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Frederick J. Bartnicki
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Packaging clip
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Patent number 5,297,889
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Issue date Mar 29, 1994
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R. D. Werner Co., Inc.
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Stephanie P. Crouse
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Ladder top
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Patent number 5,259,480
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Issue date Nov 9, 1993
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R. D. Werner Co., Inc.
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Frederick J. Bartnicki
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Ladder top
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Patent number D340773
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Issue date Oct 26, 1993
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R. D. Werner Co., Inc.
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Frederick J. Bartnicki
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D25 - Building units and construction elements
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Ladder pail shelf
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Patent number D340291
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Issue date Oct 12, 1993
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R. D. Werner Co., Inc.
-
Frederick J. Bartnicki
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D25 - Building units and construction elements
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Packaging clip
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Patent number 5,161,909
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Issue date Nov 10, 1992
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R. D. Werner Co., Inc.
-
Stephanie P. Crouse
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Ladder shoe and method of use
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Patent number 5,154,255
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Issue date Oct 13, 1992
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R. D. Werner Co., Inc.
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Stanley A. Kiska
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Hollow plastic ladder
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Patent number 5,131,495
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Issue date Jul 21, 1992
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R. D. Werner Co., Inc.
-
Frederick J. Bartnicki
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Ladder lash
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Patent number 5,067,588
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Issue date Nov 26, 1991
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R. D. Werner Co., Inc.
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Roy B. Bendickson
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Extendable support
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Patent number 5,067,589
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Issue date Nov 26, 1991
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R. D. Werner Co., Inc.
-
Frederick J. Bartnicki
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E04 - BUILDING
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Ceiling ladder
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Patent number 5,050,706
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Issue date Sep 24, 1991
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R. D. Werner Co., Inc.
-
Paul E. Cole
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E04 - BUILDING
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Ladder jack clamping devices
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Patent number 5,020,757
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Issue date Jun 4, 1991
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R. D. Werner Co., Inc.
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Richard P. Sulecki
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Method of making a ladder
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Patent number 4,972,571
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Issue date Nov 27, 1990
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R. D. Werner Co., Inc.
-
Paul E. Cole
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Cover for tops of ladders
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Patent number D310884
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Issue date Sep 25, 1990
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R. D. Werner Co., Inc.
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Russell S. Patton
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D25 - Building units and construction elements
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-
-
Picture frame easels
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Patent number 4,422,613
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Issue date Dec 27, 1983
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R. D. Werner Co., Inc.
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Nicholas K. Cray
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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-
Extension trestle ladder
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Patent number 4,240,522
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Issue date Dec 23, 1980
-
R. D. Werner Co., Inc.
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Kenneth J. Spear
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
-
Sectional ladder lock
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Patent number 4,226,302
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Issue date Oct 7, 1980
-
R. D. Werner Co., Inc.
-
John N. Roche
-
E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
-
Picture frame retaining clip
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Patent number 4,216,597
-
Issue date Aug 12, 1980
-
R. D. Werner Co., Inc.
-
Lawrence A. Kocina
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...