Eugene H. Stewart

Person

Pittsburgh, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Square embossed roof and rib plate
- Patent number 7,284,933
- Issue date Oct 23, 2007
- Jennmar Corporation
- Frank Calandra, Jr.
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Cable bolt head
- Patent number 6,322,290
- Issue date Nov 27, 2001
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cable bolt head
- Patent number 6,056,482
- Issue date May 2, 2000
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cable bolt head
- Patent number 5,829,922
- Issue date Nov 3, 1998
- Jenmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bearing plate
- Patent number RE35902
- Issue date Sep 22, 1998
- Jennmar Corporation
- Frank Calandra
- 405 - Hydraulic and earth engineering
Information Patent Grant
Cable tensioning dome plate
- Patent number 5,769,570
- Issue date Jun 23, 1998
- Jennmar Corporation
- John C. Stankus
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method for fabricating a truss member for a mine roof support
- Patent number 5,450,663
- Issue date Sep 19, 1995
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bearing plate
- Patent number 5,385,433
- Issue date Jan 31, 1995
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for supporting a mine roof
- Patent number 5,302,056
- Issue date Apr 12, 1994
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bearing plate
- Patent number 5,292,209
- Issue date Mar 8, 1994
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mine roof anchor having adjustable resin retaining washer
- Patent number 5,181,800
- Issue date Jan 26, 1993
- Jennmar Corporation
- John C. Stankus
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mine roof anchor having adjustable resin retaining washer and expan...
- Patent number 5,082,399
- Issue date Jan 21, 1992
- Jennmar Corporation
- Jerry E. Frease
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mine roof anchor having adjustable resin retaining washer
- Patent number 4,865,489
- Issue date Sep 12, 1989
- Jennmar Corporation
- John C. Stankus
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Square embossed roof and rib plate
- Publication number 20040018062
- Publication date Jan 29, 2004
- Frank Calandra
- E21 - EARTH DRILLING MINING

Eugene H. Stewart

Person

Patents Grantslast 30 patents

Square embossed roof and rib plate

Cable bolt head

Cable bolt head

Cable bolt head

Bearing plate

Cable tensioning dome plate

Method for fabricating a truss member for a mine roof support

Bearing plate

Method and apparatus for supporting a mine roof

Bearing plate

Mine roof anchor having adjustable resin retaining washer

Mine roof anchor having adjustable resin retaining washer and expan...

Mine roof anchor having adjustable resin retaining washer

Patents Applicationslast 30 patents

Square embossed roof and rib plate