Patent AT91810B successfully refreshed from Google Patents.
AT91810B
Expired / Lapsed
AT
⏱️ 0.0 years remaining
Multiple punch for punching out the sheet metal parts of the active iron of small transformers, especially for bells.
Assignee: Arje & Co
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Filing: 1922-05-06
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Granted: 1923-03-26
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Expires: 1942-05-06
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Bibliographic Details
Application Number
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AT
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google_patents
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2026-10-25 05:28
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