Bizarre Patents
Combination Beverage Container and Spittoon
A combination beverage container and spittoon includes a bottom portion including outer wall and a first inner wall defining a spittoon space.
PatentStorm News
Make the Most of PatentStorm
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest patents by subscribing to an RSS feed.
Got questions? Ask a Patent Expert!
Registered users: Manage your profile, comments and alerts.
US Patent 5621721 - Maintaining database integrity throughout a communication network
US Patent Issued on April 15, 1997
Estimated Patent Expiration Date:
January 12, 2015Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
January 12, 2015Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA communication network with a database consistency mechanism is disclosed, wherein a sequence number and a set of routing information for each of a set of virtual circuits of the communication network are maintained in a main database and an auxiliary database in each of a set of communication nodes in the communication network. The sequence numbers in the main database or the auxiliary database in each of the communication nodes are verified if one of the communication nodes switches between the main database and the auxiliary database, and then virtual circuits are rerouted when necessary.Other References
| InventorAssigneeApplicationNo. 372032 filed on 01/12/1995US Classes:370/394, Sequencing or resequencing of packets to insure proper output sequence order714/6Redundant stored data accessed (e.g., duplicated data, error correction coded data, or other parity-type data)ExaminersPrimary: Olms, Douglas W.Assistant: Jung, Min Attorney, Agent or FirmUS Patent References5239537, Packet-switched network having alternate virtual pathsIssued on: 08/24/1993 Inventor: Sakauchi5301184, Control system for switching duplicated switch units in ATM exchange Issued on: 04/05/1994 Inventor: Uriu, et al.5379418, Highly reliable online system Issued on: 01/03/1995 Inventor: Shimazaki, et al.5388212, Detecting unauthorized modification of communication unit based on comparison between stored hardware identification code and hardware identification code generated from operational platform identification code Issued on: 02/07/1995 Inventor: Grube, et al.5408463, Resynchronization of asynchronous transfer mode (ATM) switch fabric Issued on: 04/18/1995 Inventor: Merchant, et al.5473598Routing method and apparatus for switching between routing and conversion tables based on selection information included in cells to be routed Issued on: 12/05/1995 Inventor: Takatori, et al. Foreign Patent References
International ClassH04L 012/56 |
