DE405657C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Upsetting of heads on bolts
Assignee: Individual
•
Filing: 1920-06-22
•
Granted: 1924-11-06
•
Expires: 1940-06-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-02 21:11
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/44; B21K1/46; B21J; B21J5/00; B21J5/06; B21J5/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.