JPS4851331U - - Google Patents
Info
- Publication number
- JPS4851331U JPS4851331U JP9481271U JP9481271U JPS4851331U JP S4851331 U JPS4851331 U JP S4851331U JP 9481271 U JP9481271 U JP 9481271U JP 9481271 U JP9481271 U JP 9481271U JP S4851331 U JPS4851331 U JP S4851331U
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9481271U JPS4851331U (cs) | 1971-10-14 | 1971-10-14 | |
| US05/205,832 US4002408A (en) | 1971-10-14 | 1971-12-10 | System and device for overhead projection |
| DE2212502A DE2212502C3 (de) | 1971-10-14 | 1972-03-15 | Überkopfprojektor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9481271U JPS4851331U (cs) | 1971-10-14 | 1971-10-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4851331U true JPS4851331U (cs) | 1973-07-04 |
Family
ID=28008212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9481271U Pending JPS4851331U (cs) | 1971-10-14 | 1971-10-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS4851331U (cs) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2811892A (en) * | 1954-12-23 | 1957-11-05 | American Mach & Foundry | Bowling alley scoring and timing projector device |
-
1971
- 1971-10-14 JP JP9481271U patent/JPS4851331U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2811892A (en) * | 1954-12-23 | 1957-11-05 | American Mach & Foundry | Bowling alley scoring and timing projector device |