Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Phonograph having an improved tone arm assembly

Phonograph having an improved tone arm assembly

US Patent 4303999 · Granted Dec 1, 1981

Estimated economic value: $1,604,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Advertising panel for conveyor2005
Multichannel infusion pump for sequencing IV fluids to a patient1994
Peristaltic pump with mechanism for maintaining linear flow1990
Cartridge alignment mechanism for tape drive1988
Precision bearing for reciprocating a magnetic head1986
Toy tape recorder1983
Releasable hinge for swingable portions of a container1981
Drive control mechanism for a phonograph1981
Microphonograph record1981