Patent · US Active

Overhead Projector with retractable screen

US8899758B2 · kind B2 · utility

0Cited by
2References
13Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 18, 2010
Grant dateDec 2, 2014
Priority date
Expiry dateJul 26, 2032

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03B21/62
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

This overhead projector comprises:

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