Patent US3840229A successfully refreshed from Google Patents.
Patent JPS52149657A successfully refreshed from Google Patents.
JPS52149657A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Heat exchanger manufacturing method
Assignee: Tokyo Sanyo Electric Co Ltd
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Filing: 1976-06-07
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Granted: —
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Expires: 1996-06-07
Abstract
Abstract PURPOSE: Slack portion like waving is formed on the extended part of the thin metal plate to cover metal pipe and metal plate so that the extended portion of the thin metal plate is prevented from breakage at the press work of this sheet-on-pipe manufacturing. COPYRIGHT: (C)1977,JPO&Japio
Inventors
- 👤 Shoji Tanazawa
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-04 19:05
CPC Classifications
—
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