DH

David O. Hanon

PL Plantronics: 3 patents #128 of 433Top 30%
WE Walker Equipment: 2 patents #2 of 2Top 100%
ES Era Systems: 1 patents #6 of 13Top 50%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
Overall (All Time): #587,563 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6620620 Micro liquid evaporator John Lynde Anderson, Ross F. Russell, James Nelson Edwards 2003-09-16
5495525 Non-volatile automatic telephone number dialer circuit Rickey R. Walker 1996-02-27
5263199 Vehicle accessory having integrally contained radio receiver and recording means Ronald Barnes 1993-11-16
5185789 Universal telephone handset interface Rickey R. Walker 1993-02-09
5036536 Electret microphone transmitter for use in telephone circuits Ricky R. Walker 1991-07-30
5020127 Tankless electric water heater Harry Eddas 1991-05-28
4951002 Battery powered in-line amplifier 1990-08-21
RE33309 Telephone handset amplifier circuit Wesley F. Walker, Jr. 1990-08-21
4466120 Telephone handset amplifier circuit Wesley F. Walker, Jr. 1984-08-14