FR633097A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Method and apparatus for reprinting on proof sheets and other sheets, originals provided, in copying ink, with catoptric scriptures or designs
Assignee: Wilhelm Ritzerfeld
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Filing: 1927-04-22
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Granted: 1928-01-20
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Expires: 1947-04-22
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm Ritzerfeld
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-27 12:20
CPC Classifications
B; B41; B41L; B41L11/00
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