CA440385A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Thermal insulating material
Assignee: Canadian Gypsum Co Ltd
•
Filing: —
•
Granted: 1947-03-25
•
Expires: 1964-03-25
Abstract
No abstract record available.
Inventors
- 👤 C. Schuetz Clyde
- 👤 R. Minnis Bradford
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-10-25 14:04
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.