H02G- INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES.H02B1/04- Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing.H02B1/015- Boards, panels, desks Parts thereof or accessories therefor.H02B1/00- Frameworks, boards, panels, desks, casings Details of substations or switching arrangements.
H02B- BOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER.H02- GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER.238000009435 building construction Methods 0.000 description 2.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Benjamin E Frank filed Critical Benjamin E Frank Priority to US316241A priority Critical patent/US2707221A/en Application granted granted Critical Publication of US2707221A publication Critical patent/US2707221A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US316241A Inventor Benjamin E Frank Original Assignee Benjamin E Frank Priority date (The priority date is an assumption and is not a legal conclusion.
#Electrical plaster rings extensions pdf
Google Patents Adjustable switch frames and plaster ringsĭownload PDF Info Publication number US2707221A US2707221A US316241A US31624152A US2707221A US 2707221 A US2707221 A US 2707221A US 316241 A US316241 A US 316241A US 31624152 A US31624152 A US 31624152A US 2707221 A US2707221 A US 2707221A Authority US United States Prior art keywords switch extension screws cover plate enclosure Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
Google Patents US2707221A - Adjustable switch frames and plaster rings US2707221A - Adjustable switch frames and plaster rings
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