Four-pan algebra balance

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Information

Patent Grant
D398549

References
Source

Patent Number
D398,549
Date Filed
Monday, August 11, 1997
27 years ago
Date Issued
Tuesday, September 22, 1998
26 years ago

Inventors
- George Kung
- Ken Vicchiollo
Original Assignees
- CUISENAIRE COMPANY OF AMERICA, INC
Examiners
- Davis; Antoine Duval
Agents
- Nutter, McClennen & Fish, LLP

US Classifications
- D10 - Measuring, testing, or signalling instruments
Field of Search
- US
- D10 90
- 177 190-198
- 177 262
- 177 263
- 434 194
- 434 188
- 434 191
- 434 187
International Classifications
- 1004
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a four-pan algebra balance, as shown.

US Referenced Citations (7)

Number	Name	Date	Kind
D155162	Jensen	Sep 1949
784145	Donecker	Mar 1905
3000114	Orlov	Sep 1961
3721019	Befferman	Mar 1973
3742619	Jenks	Jul 1973
4713009	Borenson	Dec 1987
5425643	Strickland	Jun 1995