Granted Patent
Utility
US 6,751,329 · App. 09/955,586
Loudspeaker driver
Inventors:
Martin Colloms, Ian D. MacFarlane
Patented Case
View Patent ↗
Granted: Jun 15, 2004
Filed: Sep 19, 2001
Inventors
Martin Colloms
Ian D. MacFarlane
Assignee (at issue)
New Transducers Limited
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.