Richard N. Cheever

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Acton, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Readily attachable and detachable electron-beam permeable window as...
- Patent number 4,631,444
- Issue date Dec 23, 1986
- Tetra Pak Developpement SA
- Richard N. Cheever
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of cold cathode replenishment in electron beam apparatus and...
- Patent number 4,496,881
- Issue date Jan 29, 1985
- Tetra Pak Developpement SA
- Richard N. Cheever
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electron beam-irradiating apparatus with conical bushing seal-support
- Patent number 4,439,686
- Issue date Mar 27, 1984
- Tetra Pak Developpement Ltd.
- Richard N. Cheever
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Process of and apparatus for cold-cathode electron-beam generation...
- Patent number 4,367,412
- Issue date Jan 4, 1983
- Tetra Pak Developpement SA
- Richard N. Cheever
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Process of and apparatus for cold-cathode electron-beam generation...
- Patent number 4,305,000
- Issue date Dec 8, 1981
- Tetra Pak Developpement Ltd.
- Richard N. Cheever
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE