JOHN B MCPHERSON
Engineers in Lyme, CT

License number
Pennsylvania PE011174L
Category
Engineers
Type
Professional Engineer
Address
Address 2
Lyme, CT 06371
Pennsylvania
LicenseFiles verified this license of Apr 25, 2017 at the Pennsylvania Licensing System.

Professional information

John Mcpherson Photo 1

Envelope Opening Mechanism

US Patent:
4189341, Feb 19, 1980
Filed:
Oct 3, 1977
Appl. No.:
5/838655
Inventors:
John B. McPherson - Old Lyme CT
William H. Gunther - Guilford CT
Assignee:
Thor Dahl, Inc. - New York NY
International Classification:
B44C 122
US Classification:
156654
Abstract:
A method and mechanism for opening envelopes by chemical means.

John Mcpherson Photo 2

Envelope Opening Process

US Patent:
4082603, Apr 4, 1978
Filed:
Jul 28, 1975
Appl. No.:
5/599596
Inventors:
John B. McPherson - Old Lyme CT
William H. Gunther - Guilford CT
Assignee:
Thor Dahl, Inc. - New York NY
International Classification:
B44C 122
US Classification:
156654
Abstract:
A method and mechanism for opening envelopes by chemical means.

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