Mechanical pencil
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United States of America Patent
Stats
-
Jan 27, 1981
Grant Date -
N/A
app pub date -
May 30, 1978
filing date -
May 28, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mechanical pencil of the type having a pushbutton lead-feeding mechanism is provided with a space into which a replaceable cartridge containing leads can be inserted. The cartridge has a lead outlet opening which is blocked by a closure that is moved out of the way upon such insertion so that the leads can thereupon move sequentially into the lead-feeding mechanism, permitting a user to write until all leads in the cartridge are used up.
First Claim
Family
International Classification(s)
Cited Art Landscape
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