Patent · US Expired

Photocopying machines

US3980294A · kind A · utility

2Cited by

2References

2Claims

0Family size

Assignee

Wito Wissenschaftliches Forschungs-Institut A.G. · CH

Inventors

Paul Heinzer · Pully, CH
Helmut Wulz · Zürich, CH

Key dates

Filing date	Feb 11, 1975
Grant date	Sep 14, 1976
Priority date	—
Expiry date	Feb 11, 1995

Classification

Technology area (CPC G)Physics
CPC primaryG03G15/6529
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A photocopying machine which includes a band conveyor for transporting sheet material through the machine, the conveyor including end drums supporting a band of seamless and endless perforated metal with its upper run disposed over a suction chamber.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.