Patent CA979647A successfully refreshed from Google Patents.
CA979647A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Ladle gate valve
Assignee: USS Constitution Museum
•
Filing: 1972-05-24
•
Granted: 1975-12-16
•
Expires: 1992-05-24
Abstract
No abstract record available.
Inventors
- 👤 Earl P. Shapland
- 👤 James T. Shapland
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-05 22:33
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/14; B22D41/22; B22D41/40; B22D41/28
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.