ROBERT MADDESTRA
Broker in Canton, MA
License number
Massachusetts 96930
Issued Date
May 1, 1977
Expiration Date
May 21, 2017
Type
Broker
Address
Address
Canton, MA 02021
Professional information
Educational Block With Replaceable Chip
US Patent:
4003144, Jan 18, 1977
Filed:
Jul 11, 1975
Appl. No.:
5/595301
Inventors:
Robert Maddestra - Canton MA
David E. Munn - Framingham MA
David E. Munn - Framingham MA
Assignee:
Damon Corporation - Needham Heights MA
International Classification:
A63H 3308
US Classification:
35 70
Abstract:
An educational alphabet block formed of a polymeric material and having the configuration of a cube with a square recess on each face for receiving a removable chip. Each face of the block also defines an aperture. The aperture reduces the weight of the block without reducing its strength and also provides a means for inserting rods into the block.
The chip is fabricated of a polymeric material and includes opposed flexible lips about a groove around the perimeter of the chip. The flexible lips facilitate the ease with which chips are inserted and removed from a recess in the face of the block. The groove enables the lip of one chip to be used to remove another chip secured in a recess in the block.
The chip may have appropriate legends such as letters of the alphabet, numerals or scenes printed on one or both faces. Alternatively, the chips may define a central aperture for the insertion of rods into the blocks.
Interconnecting Piece For An Educational Pegboard
US Patent:
D244307, May 10, 1977
Filed:
Jul 11, 1975
Appl. No.:
5/595320
Inventors:
Robert Maddestra - Canton MA
David E. Munn - Framingham MA
David E. Munn - Framingham MA
Assignee:
Damon Corporation - Needham Heights MA
International Classification:
D2101
US Classification:
D34 15GG
Display Stand
US Patent:
4234148, Nov 18, 1980
Filed:
Jan 19, 1979
Appl. No.:
6/004705
Inventors:
Robert Maddestra - Canton MA
David E. Munn - Framingham MA
David E. Munn - Framingham MA
Assignee:
Damon Corporation - Needham Heights MA
International Classification:
A45D 1904, A47G 2900
US Classification:
248174
Abstract:
Disclosed is a sturdy display stand for holding a relatively small and light in weight article for display. The stand has a platform member supported by a support member. At least one flexible arm extends perpendicularly from the support member and through an aperture in the platform member. The flexible arm is bent so that its free end may be attached to the platform member, thereby creating a pedestal for holding the display article.