Patent FR498546A successfully refreshed from Google Patents.
FR498546A
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FR
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Blasthole digging machine
Assignee: Individual
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Filing: 1916-03-04
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Granted: 1920-01-14
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Expires: 1936-03-04
Abstract
No abstract record available.
Inventors
- 👤 Frederic Guillierme
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-01 09:57
CPC Classifications
E; E21; E21B; E21B3/00; E21B3/02; E21B10/00; E21B10/44; E21B11/00; E21B11/005; E21B19/00; E21B19/08; E21B19/084; F; F42; F42B; F42B23/00
Claims Analysis
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References Cited (Backward Citations)
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