JPS57137581A - Automatic door closer - Google Patents
Automatic door closerInfo
- Publication number
- JPS57137581A JPS57137581A JP2189481A JP2189481A JPS57137581A JP S57137581 A JPS57137581 A JP S57137581A JP 2189481 A JP2189481 A JP 2189481A JP 2189481 A JP2189481 A JP 2189481A JP S57137581 A JPS57137581 A JP S57137581A
- Authority
- JP
- Japan
- Prior art keywords
- automatic door
- door closer
- closer
- automatic
- door
- 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.)
- Pending
Links
Landscapes
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2189481A JPS57137581A (en) | 1981-02-16 | 1981-02-16 | Automatic door closer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2189481A JPS57137581A (en) | 1981-02-16 | 1981-02-16 | Automatic door closer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57137581A true JPS57137581A (en) | 1982-08-25 |
Family
ID=12067808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2189481A Pending JPS57137581A (en) | 1981-02-16 | 1981-02-16 | Automatic door closer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57137581A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9121217B1 (en) | 2001-07-13 | 2015-09-01 | Steven M. Hoffberg | Intelligent door restraint |
-
1981
- 1981-02-16 JP JP2189481A patent/JPS57137581A/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9121217B1 (en) | 2001-07-13 | 2015-09-01 | Steven M. Hoffberg | Intelligent door restraint |
US9995076B1 (en) | 2001-07-13 | 2018-06-12 | Steven M. Hoffberg | Intelligent door restraint |
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