Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Class Information
Number: 40/489
Name: Card, picture, or sign exhibiting > Changing exhibitor > Interchangeable plate
Description: Device comprising interchangeable letters, consisting of a frame provided with recesses within which charactered plates may be shifted or changed at will.










Sub-classes under this class:

Class Number Class Name Patents
40/490 Sliding 96


Patents under this class:

Patent Number Title Of Patent Date Issued
6578302 Sign assembly Jun. 17, 2003
6257536 Merchandise display device Jul. 10, 2001
6185850 Golf pairing apparatus and method of use Feb. 13, 2001
6041934 Portable scoring apparatus including carrying case Mar. 28, 2000
5737888 Versatile surround trim structure Apr. 14, 1998
5251570 Multipurpose scoreboard system Oct. 12, 1993
5016147 Flight desk with indicators May. 14, 1991
4884352 Changeable sign assembly Dec. 5, 1989
4831956 Tennis scoring apparatus May. 23, 1989
4791739 Price board Dec. 20, 1988
4760659 Display plate for a printed circuit board Aug. 2, 1988
4723368 Display mounting arrangement Feb. 9, 1988
4694596 Merchandise information tag with improved mounting portion Sep. 22, 1987
4691456 Container for storing a stack of pictures Sep. 8, 1987
4658525 Supervisory control panel board Apr. 21, 1987
4613128 3D display Sep. 23, 1986
4542051 Variable collage Sep. 17, 1985
4539766 Merchandise information tag Sep. 10, 1985
4537821 Merchandise information display tag with guide means Aug. 27, 1985
4530177 Sign with interchangeable characters Jul. 23, 1985
4505061 Graphic display Mar. 19, 1985
4500088 3D Display Feb. 19, 1985
4494658 Modular display for cigarette packs Jan. 22, 1985
4419838 Diagram board element Dec. 13, 1983
4413435 Picture viewer Nov. 8, 1983
4361828 Automotive communication Nov. 30, 1982
4330955 Point of purchase display device May. 25, 1982
4322903 Directory assembly Apr. 6, 1982
4258490 Price display board with tape pressing and locking means Mar. 31, 1981
4251936 Display board Feb. 24, 1981
4233768 Slide calculator Nov. 18, 1980
4177902 Display unit Dec. 11, 1979
4157531 Automobile emergency signal Jun. 5, 1979
4128955 Exhibiting device Dec. 12, 1978
4060929 Toy detective set Dec. 6, 1977











 
 
  Recently Added Patents
Polymers derived from benzobis(silolothiophene) and their use as organic semiconductors
Integrated advance copper fuse combined with ESD/over-voltage/reverse polarity protection
Performing a cyclic redundancy checksum operation responsive to a user-level instruction
Radio communication system, base station apparatus, terminal apparatus, and radio communication method for radio communication system
Xylitol-based anti-mucosal compositions and related methods and compositions
Monitoring device for monitoring a display device
Efficient location discovery
  Randomly Featured Patents
Platen with diaphragm and method for optimizing wafer polishing
Pulse welding process
Motor-compressor unit of the sealed type for refrigerating appliances
Charger for a chest-massage unit
Test probe
Plastic expansion nut
Power-up and no-load/light load protective mechanisms for DC:DC converters
Modular system for camping in a sport utility vehicle
Protective hood, such as firefighter's hood, which has sections made from comparatively heavier and comparatively lighter materials
High density ROM and a method of making the same