Patent DE457166C successfully refreshed from Google Patents.
DE457166C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Sealing on pneumatically operated quick-release hammers with an external return spring, especially for track tamping
Assignee: HAMBURGER HOCHBAHN AKT GES
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Filing: —
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Granted: 1928-03-09
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Expires: 1945-03-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-24 21:48
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/12; E01B27/13; E01B27/16
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