Est. March 2001  ·  10,244 Listings on File

Padlock Patent — Keyed

Patent 4138868

Inventor: Frederick F. Richards, Sr.

View on USPTO / Google Patents ↗
Patent # 4138868
Issue Date 1977-08-19
Inventor Frederick F. Richards, Sr.
Assigned To Vingcard Systems Inc
Type Keyed

Patent Drawings

Patent 4138868 drawing 1 Drawing 1 Patent 4138868 drawing 2 Drawing 2 Patent 4138868 drawing 3 Drawing 3

Patent Details

Patent Number 4138868
Issue Date 1977-08-19
Inventor Frederick F. Richards, Sr.
Assigned To Vingcard Systems Inc
Patent Type Keyed
External Link https://patents.google.com/patent/US4138868/en ↗
← 4141232
↑ Back to Patent Database
4141232 →