CA728913A - Portable projection screen - Google Patents
Portable projection screenInfo
- Publication number
- CA728913A CA728913A CA728913A CA728913DA CA728913A CA 728913 A CA728913 A CA 728913A CA 728913 A CA728913 A CA 728913A CA 728913D A CA728913D A CA 728913DA CA 728913 A CA728913 A CA 728913A
- Authority
- CA
- Canada
- Prior art keywords
- projection screen
- portable projection
- portable
- screen
- projection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA728913T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA728913A true CA728913A (en) | 1966-03-01 |
Family
ID=36067831
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA728913A Expired CA728913A (en) | Portable projection screen |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA728913A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4017152A (en) * | 1975-05-14 | 1977-04-12 | Allen William P | Portable projection screen |
CN101840145A (en) * | 2010-06-11 | 2010-09-22 | 清华大学 | Floor type electrically controlled telescoping projection screen bracket |
-
0
- CA CA728913A patent/CA728913A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4017152A (en) * | 1975-05-14 | 1977-04-12 | Allen William P | Portable projection screen |
CN101840145A (en) * | 2010-06-11 | 2010-09-22 | 清华大学 | Floor type electrically controlled telescoping projection screen bracket |
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