CA140872A - Signal for doors - Google Patents
Signal for doorsInfo
- Publication number
- CA140872A CA140872A CA000140872A CA140872DA CA140872A CA 140872 A CA140872 A CA 140872A CA 000140872 A CA000140872 A CA 000140872A CA 140872D A CA140872D A CA 140872DA CA 140872 A CA140872 A CA 140872A
- Authority
- CA
- Canada
- Prior art keywords
- doors
- signal
- 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.)
- Expired
Links
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA140872T | 1912-02-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA140872A true CA140872A (en) | 1912-06-04 |
Family
ID=45260588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000140872A Expired CA140872A (en) | 1912-02-14 | 1912-02-14 | Signal for doors |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA140872A (en) |
-
1912
- 1912-02-14 CA CA000140872A patent/CA140872A/en not_active Expired
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