In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 7394895 | Methods and systems for 1+ prepaid routing service The present invention provides methods and systems for automatically routing a long distance call placed by a subscriber to a prepaid service provider. Six exemplary methods are discussed for allowing the prepaid subscriber to directly dial a called party's long dis... | 07/01/2008 |
| 7260193 | Method and system of rating in a charging system A method and system for determining rating data for services in a communication network, wherein an incoming charging request is received from a service element (105, 106), data such as a location number associated with a service or a subscriber (102) ... | 08/21/2007 |
| 7174008 | Method and system for managing the duration and cost of a telephone call A method for establishing a call between a calling party and at least one called party via a call switching network. The method includes calculating a call charge per minute rate based upon a number of rate-determining parameters, notifying the calling party of the ... | 02/06/2007 |
| 7095834 | Methods and systems for 1+ prepaid routing service The present invention provides methods and systems for automatically routing a long distance call placed by a subscriber to a prepaid service provider. Six exemplary methods are discussed for allowing the prepaid subscriber to directly dial a called party's long dis... | 08/22/2006 |
| 7076038 | Methods and systems for enabling charging land-line long-distance calls to wireless subscriber's account Disclosed is a method of and apparatus employing the method for automatically enabling long-distance calls on the land-line public telephone switched network and debiting the wireless subscriber's account an amount for the long-distance call. The method includes the... | 07/11/2006 |
| 6236851 | Prepaid security cellular telecommunications system A cellular telecommunications system having a security feature which allows only pre-authorized users to complete cellular telephone calls. The system and method recognizes a cellular radiotelephone's pre-programmed and pre-selected telephone number and a... | 05/22/2001 |
| 5915006 | Telephone line aggregated billing A method and system in which calls made on two or more phone lines of a customer are aggregated for billing and discount billing plans to which the customer subscribes are applied to the aggregated phone usage of the customer. In order to price a call mad... | 06/22/1999 |
| 5844972 | Customer profile based telephone card billing A method and system in which calls made by a customer using a calling card are billed in accordance with the customer's subscribed calling plans. In order to price a call made over a network by a customer of the network, information specifying a billing p... | 12/01/1998 |
| 5754633 | Method for achieving third-number call billing A party (12, 14, 16 and 18) to a telephone call carried by a telecommunications network (10) may effect transfer of the call charges that would otherwise be billed to that party by entering a billing transfer request after the call has been set up. Upon r... | 05/19/1998 |
| 5646984 | Payer-variable exchange system In a payer-variable exchange system, exchanges 2A and 2B and payer change control devices are provided corresponding to telephones 1A and 1B used by communicators A and B, payer change function units 4A and 4B of the payer change control devices 3A and 3B... | 07/08/1997 |