Patent CA487648A successfully refreshed from Google Patents.
CA487648A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Automatic vacuum systems
Assignee: Radio Corporation of America
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Filing: —
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Granted: 1952-10-28
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Expires: 1969-10-28
Abstract
No abstract record available.
Inventors
- 👤 Cunningham Smith Perry
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-10-24 09:55
CPC Classifications
F; F04; F04F; F04F9/00; F04F9/08; H; H01; H01J; H01J7/00; H01J7/42; H01J9/00; H01J9/38; H01J9/385
Claims Analysis
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References Cited (Backward Citations)
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