John M. Alden

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Needham, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Adjustable blade for facsimile recording machine
- Patent number 4,358,778
- Issue date Nov 9, 1982
- Alden Research Foundation
- John M. Alden
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electric graphic recorder
- Patent number 4,234,886
- Issue date Nov 18, 1980
- Alden Research Foundation
- John M. Alden
- G01 - MEASURING TESTING
Information Patent Grant
Electrolytic graphic recorder with cover receiving recording web
- Patent number 4,159,479
- Issue date Jun 26, 1979
- Alden Research Foundation
- John M. Alden
- G01 - MEASURING TESTING
Information Patent Grant
Cover mounted holddown for facsimile recorder cassette
- Patent number 4,131,901
- Issue date Dec 26, 1978
- Alden Research Foundation
- John M. Alden
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Idler guide for facsimile scanning belt
- Patent number 4,121,226
- Issue date Oct 17, 1978
- Alden Research Foundation
- John M. Alden
- G01 - MEASURING TESTING
Information Patent Grant
Facsimile cassette with wire electrode
- Patent number 4,119,975
- Issue date Oct 10, 1978
- Alden Research Foundation
- John M. Alden
- G01 - MEASURING TESTING
Information Patent Grant
Facsimile apparatus for scanning a selected portion of a graphic re...
- Patent number 4,018,985
- Issue date Apr 19, 1977
- Alden Research Foundation
- John M. Alden
- H04 - ELECTRIC COMMUNICATION TECHNIQUE