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Carlisle, MA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method for making wound strings for musical instruments characteriz...
Patent number
5,984,226
Issue date
Nov 16, 1999
Inventronics, Inc.
Albert E. Sanderson
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Wound strings for musical instrument
Patent number
5,892,166
Issue date
Apr 6, 1999
Inventronics, Inc.
Albert E. Sanderson
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Wound strings for musical instruments characterized by reduced inha...
Patent number
5,817,960
Issue date
Oct 6, 1998
Inventronics, Inc.
Albert E. Sanderson
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Method and apparatus for tuning musical instruments
Patent number
5,285,711
Issue date
Feb 15, 1994
Inventronics, Inc.
Albert E. Sanderson
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Temperature compensated solid-state oscillator
Patent number
4,015,218
Issue date
Mar 29, 1977
Inventronics, Inc.
Albert E. Sanderson
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Apparatus for use in the tuning of musical instruments
Patent number
4,014,242
Issue date
Mar 29, 1977
Inventronics, Inc.
Albert E. Sanderson
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Series direct-current voltage regulator
Patent number
3,983,473
Issue date
Sep 28, 1976
Inventronics, Inc.
Albert E. Sanderson
G05 - CONTROLLING REGULATING
Information
Patent Grant
Phase different detector and display
Patent number
3,982,184
Issue date
Sep 21, 1976
Inventronics, Inc.
Albert E. Sanderson
G01 - MEASURING TESTING
Information
Patent Grant
Method for tuning musical instruments
Patent number
3,968,719
Issue date
Jul 13, 1976
Inventronics, Inc.
Albert E. Sanderson
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
75231903 - SANDERSON ACCU-TUNER
Serial number
75231903
Registration number
2218128
Filing date
Jan 27, 1997
Inventronics, Inc.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments