Harlan J. Demers

Follow

Person

Marshallville, OH, US

People

Patents Grantslast 30 patents

Information Patent Grant
Concealed load distribution means for wooden beams
- Patent number 4,742,663
- Issue date May 10, 1988
- Koppers Company, Inc.
- Harlan J. Demers
- E04 - BUILDING
Information Patent Grant
Connector and imperforate reinforcement plates in combination
- Patent number 4,299,511
- Issue date Nov 10, 1981
- Koppers Company, Inc.
- Harlan J. Demers
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...