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David S. Maitland
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Ft. Collins, CO, US
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Patents Grants
last 30 patents
Information
Patent Grant
High voltage tolerant CMOS input/output pad circuits
Patent number
5,646,809
Issue date
Jul 8, 1997
Hewlett-Packard Company
Gordon W. Motley
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Method of programming a desired source resistance for a driver stage
Patent number
5,581,197
Issue date
Dec 3, 1996
Hewlett-Packard Co.
Gordon W. Motley
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Adaptable programmed calculator including a percent keyboard operator
Patent number
4,181,966
Issue date
Jan 1, 1980
Hewlett-Packard Company
Freddie W. Wenninger
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Adaptable programmed calculator including automatic decimal point p...
Patent number
4,156,921
Issue date
May 29, 1979
Hewlett-Packard Company
Freddie W. Wenninger
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Modular binary half-adder
Patent number
4,054,788
Issue date
Oct 18, 1977
Hewlett-Packard Company
David Steven Maitland
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Binary adder
Patent number
4,052,604
Issue date
Oct 4, 1977
Hewlett-Packard Company
David Steven Maitland
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
IGFET threshold voltage compensator
Patent number
4,049,980
Issue date
Sep 20, 1977
Hewlett-Packard Company
David Steven Maitland
G05 - CONTROLLING REGULATING
Information
Patent Grant
Information transfer bus circuit with signal loss compensation
Patent number
4,045,684
Issue date
Aug 30, 1977
Hewlett-Packard Company
William Donovan Eads
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Adaptable programmed calculator having provision for plug-in keyboa...
Patent number
3,971,925
Issue date
Jul 27, 1976
Hewlett-Packard Company
Freddie W. Wenninger
G06 - COMPUTING CALCULATING COUNTING