JPS4890525A - - Google Patents
Info
- Publication number
- JPS4890525A JPS4890525A JP2120872A JP2120872A JPS4890525A JP S4890525 A JPS4890525 A JP S4890525A JP 2120872 A JP2120872 A JP 2120872A JP 2120872 A JP2120872 A JP 2120872A JP S4890525 A JPS4890525 A JP S4890525A
- 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
- Focusing (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Automatic Focus Adjustment (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2120872A JPS4890525A (ja) | 1972-03-01 | 1972-03-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2120872A JPS4890525A (ja) | 1972-03-01 | 1972-03-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4890525A true JPS4890525A (ja) | 1973-11-26 |
Family
ID=12048557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2120872A Pending JPS4890525A (ja) | 1972-03-01 | 1972-03-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS4890525A (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50133832A (ja) * | 1974-04-09 | 1975-10-23 | ||
| JPS5640991A (en) * | 1979-09-13 | 1981-04-17 | Niko Denshi Kk | Fare collection device |
| JPS599332U (ja) * | 1982-07-12 | 1984-01-21 | 株式会社学習研究社 | 可変焦点レンズを用いたオ−バ−ヘツドプロジエクタ− |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3222981A (en) * | 1961-11-24 | 1965-12-14 | James W Lucas | Two-element projection lens |
-
1972
- 1972-03-01 JP JP2120872A patent/JPS4890525A/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3222981A (en) * | 1961-11-24 | 1965-12-14 | James W Lucas | Two-element projection lens |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50133832A (ja) * | 1974-04-09 | 1975-10-23 | ||
| JPS5640991A (en) * | 1979-09-13 | 1981-04-17 | Niko Denshi Kk | Fare collection device |
| JPS599332U (ja) * | 1982-07-12 | 1984-01-21 | 株式会社学習研究社 | 可変焦点レンズを用いたオ−バ−ヘツドプロジエクタ− |