Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5960072 | Method and apparatus for altering the access format of telephone calls | Lindsey D. Owen, Michael R. Rice | 1999-09-28 |
| 5513738 | Coin handling system | Mark E. Kerr | 1996-05-07 |
| 5483581 | Method and apparatus for performing an automated collect call | Lindsey D. Owen, Michael R. Rice | 1996-01-09 |
| 5441138 | Coin handling system with an improved coin chute | Mark E. Kerr | 1995-08-15 |
| 5400400 | Pay telephone architecture | Todd J. Betz | 1995-03-21 |
| 5388680 | Coin handling system with an improved coin chute | Mark E. Kerr | 1995-02-14 |
| 5367561 | Cash access system and method of operation | B. Michael Adler, Lindsey D. Owen | 1994-11-22 |
| 5319701 | Method and apparatus for performing an automated collect call | Lindsey D. Owen, Michael R. Rice | 1994-06-07 |
| D342251 | Pay telephone unit | Todd J. Betz, John A. Renfro, Ray Naeini | 1993-12-14 |
| 5255770 | Coin handling system | Mark E. Kerr | 1993-10-26 |
| 5131027 | Short time validity storage | Lindsey D. Owen, Michael R. Rice | 1992-07-14 |
| 5113433 | Method and apparatus for altering the access format of telephone calls | Lindsey D. Owen, Michael R. Rice | 1992-05-12 |
| 5093858 | Method and apparatus for performing an automated collect call | Lindsey D. Owen, Michael R. Rice | 1992-03-03 |
| 5090548 | Coin handling system | Mark E. Kerr | 1992-02-25 |
| 4933965 | Short time validity storage of a billing account number at a local telecommunications station | Lindsey D. Owen, Michael R. Rice | 1990-06-12 |
| 4933966 | Method and apparatus for performing an automated collect call | Lindsey D. Owen, Michael R. Rice | 1990-06-12 |
| 4920562 | Automatic generation of billing records at a telephone paystation | Lindsey D. Owen, Michael R. Rice | 1990-04-24 |
| 4920558 | Method and apparatus for downloading speech files | Lindsey D. Owen, Michael R. Rice | 1990-04-24 |
| 4908852 | Method and apparatus for altering the access format of telephone calls | Lindsey D. Owen, Michael R. Rice | 1990-03-13 |
| 4890317 | Automatic validation of telephone account numbers | Lindsey D. Owen, Michael R. Rice | 1989-12-26 |
| 4889162 | Fluid control valve | Haydn J. Newcombe | 1989-12-26 |
| 4889165 | Water supply valves | Haydn J. Newcombe | 1989-12-26 |