Arrangement for applying written or drawn information onto image carriers for overhead projection
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 20, 1981
Grant Date -
N/A
app pub date -
Oct 31, 1977
filing date -
Nov 23, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Arrangement for applying written or drawn information onto image carriers for overhead projectors, characterized by an image carrier in film or plate form which comprises at least one colored compound, as well as a writing or drawing marker. The writing or drawing fluid of the marker contains at least one colorless compound which reacts with the colored compound to produce a color change.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully