Patent US4245954A successfully refreshed from Google Patents.
Patent CA573559A successfully refreshed from Google Patents.
CA573559A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Welding back-up assembly
Assignee: AO Smith Corp
•
Filing: —
•
Granted: 1959-04-07
•
Expires: 1976-04-07
Abstract
No abstract record available.
Inventors
- 👤 J. Chyle John
- 👤 W. Zimmermann Michael
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-08 07:02
CPC Classifications
—
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.