WILLIAM E KEATING
Accountancy in Bedford, MA
License number
Massachusetts 33257
Issued Date
Apr 12, 2016
Expiration Date
Jun 30, 2017
Type
Certified Public Accountant
Address
Address
Bedford, MA 01730
Professional information
Wireless Communication Device With Replaceable Battery And Prepaid Calling Time
US Patent:
5963859, Oct 5, 1999
Filed:
Jul 18, 1997
Appl. No.:
8/896619
Inventors:
William E. Keating - Bedford MA
Assignee:
Polaroid Corporation - Cambridge MA
International Classification:
H04M 1700, H04M 1500, H04Q 720
US Classification:
455405
Abstract:
A wireless communication device is provided which is capable of interfacing with a base station of a service provider and intended for occasional use without requiring a subscription with the service provider. The device uses a non-rechargeable replaceable power source with memory means non-detachably secured to and integral with said power source comprising information code for uniquely identifying said power means and a prepaid calling time period. After the prepaid calling time period of the wireless communication device is exhausted, the power source can be exchanged for a different power source having a new prepaid calling time period.