Harold M. Bowman

Person

Fairview Park, OH, US

People

Patents Grantslast 30 patents

Information Patent Grant
Manhole frame assembly
- Patent number 6,007,270
- Issue date Dec 28, 1999
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Anchor for utility access hole support insert
- Patent number 5,697,729
- Issue date Dec 16, 1997
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Adjustable manhole cover support with shield
- Patent number 5,628,152
- Issue date May 13, 1997
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Method and apparatus for anchoring a utility grate cover
- Patent number 5,611,640
- Issue date Mar 18, 1997
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Anchor for manhole cover support
- Patent number 5,326,188
- Issue date Jul 5, 1994
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Sturdy adjustable manhole cover support
- Patent number RE34550
- Issue date Feb 22, 1994
- Harold M. Bowman
- 404 - Road structure, process, or apparatus
Information Patent Grant
Split-ring manhole cover support
- Patent number 5,184,912
- Issue date Feb 9, 1993
- Bowman; Harold M.
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Manhole cover support with flange borne on its own base
- Patent number 5,165,819
- Issue date Nov 24, 1992
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Stiffening flanges for deformation resistance of manhole cover support
- Patent number 5,150,984
- Issue date Sep 29, 1992
- Bowman; Harold M.
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Adjustable manhole cover support with spanners
- Patent number 5,143,478
- Issue date Sep 1, 1992
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Manhole cover support with topside flange and inclined seat
- Patent number 5,051,022
- Issue date Sep 24, 1991
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Support for catch basin cover
- Patent number 5,039,248
- Issue date Aug 13, 1991
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Process for making a manhole cover support having enhanced grip
- Patent number 5,021,261
- Issue date Jun 4, 1991
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Manhole cover support with topside flange
- Patent number 4,969,770
- Issue date Nov 13, 1990
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Manhole cover support having enhanced grip
- Patent number 4,969,771
- Issue date Nov 13, 1990
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Manhole cover support having interbraced top members
- Patent number 4,966,489
- Issue date Oct 30, 1990
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Multicomponent wales and bases for manhole cover supports
- Patent number 4,963,053
- Issue date Oct 16, 1990
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Manhole cover support resistant to water infiltration
- Patent number 4,927,290
- Issue date May 22, 1990
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Manhole cover support with box flanging
- Patent number 4,872,780
- Issue date Oct 10, 1989
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Polygonal manhole cover support
- Patent number 4,867,600
- Issue date Sep 19, 1989
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Sturdy adjustable manhole cover support
- Patent number 4,867,601
- Issue date Sep 19, 1989
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Utility cover extension
- Patent number 4,834,574
- Issue date May 30, 1989
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Ingot mold and method
- Patent number 4,747,739
- Issue date May 31, 1988
- Harold M. Bowman
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Ingot mold and method
- Patent number 4,416,440
- Issue date Nov 22, 1983
- Bowman; Harold M.
- Harold M. Bowman
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Sectional ingot mold
- Patent number 4,358,084
- Issue date Nov 9, 1982
- Harold M. Bowman
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Manhole cover support
- Patent number 4,281,944
- Issue date Aug 4, 1981
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Sectional ingot mold
- Patent number 4,269,385
- Issue date May 26, 1981
- Harold M. Bowman
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Adjustable manhole cover support structure
- Patent number 4,236,358
- Issue date Dec 2, 1980
- National Utility Products Company
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Manhole construction
- Patent number 4,203,686
- Issue date May 20, 1980
- Harold M. Bowman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Fire hydrant locking device
- Patent number 4,033,372
- Issue date Jul 5, 1977
- Harold M. Bowman
- E03 - WATER SUPPLY SEWERAGE

Harold M. Bowman

Person

Patents Grantslast 30 patents

Manhole frame assembly

Anchor for utility access hole support insert

Adjustable manhole cover support with shield

Method and apparatus for anchoring a utility grate cover

Anchor for manhole cover support

Sturdy adjustable manhole cover support

Split-ring manhole cover support

Manhole cover support with flange borne on its own base

Stiffening flanges for deformation resistance of manhole cover support

Adjustable manhole cover support with spanners

Manhole cover support with topside flange and inclined seat

Support for catch basin cover

Process for making a manhole cover support having enhanced grip

Manhole cover support with topside flange

Manhole cover support having enhanced grip

Manhole cover support having interbraced top members

Multicomponent wales and bases for manhole cover supports

Manhole cover support resistant to water infiltration

Manhole cover support with box flanging

Polygonal manhole cover support

Sturdy adjustable manhole cover support

Utility cover extension

Ingot mold and method

Ingot mold and method

Sectional ingot mold

Manhole cover support

Sectional ingot mold

Adjustable manhole cover support structure

Manhole construction

Fire hydrant locking device