Donald M. Werner

Follow

Person

Hermitage, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Ladder top with bail recess
- Patent number 5,573,081
- Issue date Nov 12, 1996
- Werner Co.
- Frederick J. Bartnicki
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
Ladder top
- Patent number 5,358,070
- Issue date Oct 25, 1994
- Werner Co.
- Frederick J. Bartnicki
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
Ladder top
- Patent number 5,259,480
- Issue date Nov 9, 1993
- R. D. Werner Co., Inc.
- Frederick J. Bartnicki
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
Ladder top
- Patent number D340773
- Issue date Oct 26, 1993
- R. D. Werner Co., Inc.
- Frederick J. Bartnicki
- D25 - Building units and construction elements
Information Patent Grant
Ladder pail shelf
- Patent number D340291
- Issue date Oct 12, 1993
- R. D. Werner Co., Inc.
- Frederick J. Bartnicki
- D25 - Building units and construction elements