JPS52121940A - Automatic door closer - Google Patents
Automatic door closerInfo
- Publication number
- JPS52121940A JPS52121940A JP3861276A JP3861276A JPS52121940A JP S52121940 A JPS52121940 A JP S52121940A JP 3861276 A JP3861276 A JP 3861276A JP 3861276 A JP3861276 A JP 3861276A JP S52121940 A JPS52121940 A JP S52121940A
- 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
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3861276A JPS52121940A (en) | 1976-04-05 | 1976-04-05 | Automatic door closer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3861276A JPS52121940A (en) | 1976-04-05 | 1976-04-05 | Automatic door closer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS52121940A true JPS52121940A (en) | 1977-10-13 |
Family
ID=12530076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3861276A Pending JPS52121940A (en) | 1976-04-05 | 1976-04-05 | Automatic door closer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS52121940A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9995076B1 (en) | 2001-07-13 | 2018-06-12 | Steven M. Hoffberg | Intelligent door restraint |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4871047A (en) * | 1971-12-28 | 1973-09-26 |
-
1976
- 1976-04-05 JP JP3861276A patent/JPS52121940A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4871047A (en) * | 1971-12-28 | 1973-09-26 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9995076B1 (en) | 2001-07-13 | 2018-06-12 | Steven M. Hoffberg | Intelligent door restraint |
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