JPS493435A - - Google Patents
Info
- Publication number
- JPS493435A JPS493435A JP3038872A JP3038872A JPS493435A JP S493435 A JPS493435 A JP S493435A JP 3038872 A JP3038872 A JP 3038872A JP 3038872 A JP3038872 A JP 3038872A JP S493435 A JPS493435 A JP S493435A
- 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
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3038872A JPS493435A (ja) | 1972-03-28 | 1972-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3038872A JPS493435A (ja) | 1972-03-28 | 1972-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS493435A true JPS493435A (ja) | 1974-01-12 |
Family
ID=12302507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3038872A Pending JPS493435A (ja) | 1972-03-28 | 1972-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS493435A (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6017940U (ja) * | 1984-05-31 | 1985-02-06 | 長谷川鉄工株式会社 | 木工用曲面研磨機 |
| US5289402A (en) * | 1989-12-29 | 1994-02-22 | Canon Kabushiki Kaisha | Recording medium, recording method, and readout method |
| US5623476A (en) * | 1986-12-24 | 1997-04-22 | Canon Kabushiki Kaisha | Recording device and reproduction device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3613384A (en) * | 1969-02-10 | 1971-10-19 | J Donovan Jacobs | Method and apparatus for advancing tunnel supports |
| US3613379A (en) * | 1969-06-25 | 1971-10-19 | Joseph Donovan Jacobs | Method for advancing tunnel supports |
-
1972
- 1972-03-28 JP JP3038872A patent/JPS493435A/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3613384A (en) * | 1969-02-10 | 1971-10-19 | J Donovan Jacobs | Method and apparatus for advancing tunnel supports |
| US3613379A (en) * | 1969-06-25 | 1971-10-19 | Joseph Donovan Jacobs | Method for advancing tunnel supports |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6017940U (ja) * | 1984-05-31 | 1985-02-06 | 長谷川鉄工株式会社 | 木工用曲面研磨機 |
| JPS6131808Y2 (ja) * | 1984-05-31 | 1986-09-16 | ||
| US5623476A (en) * | 1986-12-24 | 1997-04-22 | Canon Kabushiki Kaisha | Recording device and reproduction device |
| US5289402A (en) * | 1989-12-29 | 1994-02-22 | Canon Kabushiki Kaisha | Recording medium, recording method, and readout method |
| US5481491A (en) * | 1989-12-29 | 1996-01-02 | Canon Kabushiki Kaisha | Recording medium, recording method, and readout method |