Edward H. Cumpston

Follow

Person

Old Bennington, VT, US

People

Patents Grantslast 30 patents

Information Patent Grant
Metered feeder having a rotary groove and a cooperating scraper for...
- Patent number 4,171,071
- Issue date Oct 16, 1979
- Edward H. Cumpston
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Dispersion or suspension of solid phase in liquid phase
- Patent number 4,137,092
- Issue date Jan 30, 1979
- Edward H. Cumpston
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Rotor for mixer-refiner-reactor
- Patent number 4,042,183
- Issue date Aug 16, 1977
- Edward H. Cumpston
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method of correlating the rotor and stator in a mixer-refiner-reactor
- Patent number 4,020,994
- Issue date May 3, 1977
- Edward H. Cumpston
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Air scrubber
- Patent number 3,960,524
- Issue date Jun 1, 1976
- Edward H. Cumpston
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method and apparatus for silo storage and unloading
- Patent number 3,934,737
- Issue date Jan 27, 1976
- Edward H. Cumpston
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL