Patent US3633173A successfully refreshed from Google Patents.
CH285809A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Device for opening Letters.
Assignee: Frederick Hargreaves Reginald
•
Filing: 1950-05-08
•
Granted: —
•
Expires: 1970-05-08
Abstract
No abstract record available.
Inventors
- 👤 Frederick Hargreaves Reginald
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-10-27 05:04
CPC Classifications
B; B43; B43M; B43M7/00; B43M7/008
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.