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US 5,207,581 AGranted
Writing apparatus including electret film
OwnerSteven L. Boydinventor
Life of this patent
Estimating the term…
Abstract
Writing apparatus includes flexible electret film, capable of being erasably written upon with dry erase markers, as a writing medium. The apparatus includes a roll of electret film in a receptacle, brackets for mounting the receptacle to a wall or a conventional flip chart stand, and a cutter to separate the material into sheets.
Claims3
A method of providing a writing surface suitable for presentation and display application comprising the steps of:
- disposing a roll of flexible electret film material, which is capable of being erasably written upon with dry erase markers, adjacent a generally vertical surface;
- withdrawing a portion of said material from said roll;
- adhering said withdrawn portion of said material to said generally vertical surface by means of electrostatic attraction;
- and,
- separating said withdrawn portion of said material from the remainder of said material while said withdrawn portion adheres to said generally vertical surface.
2 more elements
Dependencies are inferred from the claim text.