Inventor
HIRD JOHN A
20 patents
⚠️ This page may combine multiple inventors who share the name “HIRD JOHN A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
INTELLICALL INC
17 patentsUS4933966AJun 12, 1990
Method and apparatus for performing an automated collect call
INTELLICALL INC119 citations97
US5483581AJan 9, 1996
Method and apparatus for performing an automated collect call
INTELLICALL INC99 citations96
US4933965AJun 12, 1990
Short time validity storage of a billing account number at a local telecommunications station
INTELLICALL INC82 citations96
US4920562AApr 24, 1990
Automatic generation of billing records at a telephone paystation
INTELLICALL INC80 citations96
US4890317ADec 26, 1989
Automatic validation of telephone account numbers
INTELLICALL INC69 citations96
US5513738AMay 7, 1996
Coin handling system
INTELLICALL INC51 citations94
US5388680AFeb 14, 1995
Coin handling system with an improved coin chute
INTELLICALL INC65 citations94
US5093858AMar 3, 1992
Method and apparatus for performing an automated collect call
INTELLICALL INC35 citations92
US4908852AMar 13, 1990
Method and apparatus for altering the access format of telephone calls
INTELLICALL INC45 citations92
US5131027AJul 14, 1992
Short time validity storage
INTELLICALL INC20 citations82
US4920558AApr 24, 1990
Method and apparatus for downloading speech files
INTELLICALL INC19 citations82
USD342251SDec 14, 1993
Pay telephone unit
INTELLICALL INC17 citations74
US5960072ASep 28, 1999
Method and apparatus for altering the access format of telephone calls
INTELLICALL INC15 citations73
US5113433AMay 12, 1992
Method and apparatus for altering the access format of telephone calls
INTELLICALL INC17 citations73
US5441138AAug 15, 1995
Coin handling system with an improved coin chute
INTELLICALL INC5 citations72
US5090548AFeb 25, 1992
Coin handling system
INTELLICALL INC12 citations72
US5400400AMar 21, 1995
Pay telephone architecture
INTELLICALL INC12 citations71