Joseph H. DeFrees

Person

Warren, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Safety valving for cargo tanks used for bulk transportation of haza...
- Patent number 4,508,131
- Issue date Apr 2, 1985
- Allegheny Valve Company
- Joseph H. DeFrees
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Discharge control means for a storage tank for liquid
- Patent number 4,457,486
- Issue date Jul 3, 1984
- Allegheny Valve Company
- Joseph H. DeFrees
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Stuffing box with O-ring detent for control mechanism of emergency...
- Patent number 4,453,698
- Issue date Jun 12, 1984
- Allegheny Valve Company
- Joseph H. DeFrees
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Air check valve assembly for powdered bulk product transport
- Patent number 4,445,533
- Issue date May 1, 1984
- Allegheny Valve Company
- Joseph H. DeFrees
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Liquid level valve
- Patent number 4,406,299
- Issue date Sep 27, 1983
- DeFrees; Barbara Baldwin
- Joseph H. DeFrees
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Liquid level valve
- Patent number 4,316,484
- Issue date Feb 23, 1982
- Joseph H. De Frees
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Adapter valve mechanism for transportation tank
- Patent number 4,126,294
- Issue date Nov 21, 1978
- Joseph H. DeFrees
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Openable bottom loading adapter for transport tank
- Patent number 4,040,456
- Issue date Aug 9, 1977
- Joseph H. DeFrees
- B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...
Information Patent Grant
Loading and unloading valve mechanism for transportation tank
- Patent number 4,013,096
- Issue date Mar 22, 1977
- Joseph H. DeFrees
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Manifold-valve structure
- Patent number 4,011,885
- Issue date Mar 15, 1977
- Joseph H. DeFrees
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Hydraulically balanced remote controlled emergency valve for storag...
- Patent number 4,009,862
- Issue date Mar 1, 1977
- Joseph H. DeFrees
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Joseph H. DeFrees

Person

Patents Grantslast 30 patents

Safety valving for cargo tanks used for bulk transportation of haza...

Discharge control means for a storage tank for liquid

Stuffing box with O-ring detent for control mechanism of emergency...

Air check valve assembly for powdered bulk product transport

Liquid level valve

Liquid level valve

Adapter valve mechanism for transportation tank

Openable bottom loading adapter for transport tank

Loading and unloading valve mechanism for transportation tank

Manifold-valve structure

Hydraulically balanced remote controlled emergency valve for storag...