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Padlock Patent — Pin Tumbler

Patent 1677432

Inventor: Croning, Johannes

View on USPTO / Google Patents ↗
Patent # 1677432
Issue Date July 17, 1928
Inventor Croning, Johannes
Assigned To Crown Lock Co.
Type Pin Tumbler

Patent Drawings

Patent 1677432 drawing 1 Drawing 1 Patent 1677432 drawing 2 Drawing 2 Patent 1677432 drawing 3 Drawing 3 Patent 1677432 drawing 4 Drawing 4 Patent 1677432 drawing 5 Drawing 5 Patent 1677432 drawing 6 Drawing 6 Patent 1677432 drawing 7 Drawing 7 Patent 1677432 drawing 8 Drawing 8

Patent Notes

The original patent was for a cylinder lock | Classification: 29/445

Patent Details

Patent Number 1677432
Issue Date July 17, 1928
Inventor Croning, Johannes
Assigned To Crown Lock Co.
Patent Type Pin Tumbler
External Link https://patents.google.com/patent/US1677432 ↗

Padlocks Using This Patent

2 listings
"CRONING"
#9388
"CRONING"
Crown Lock Co.
→
"CRONING"
#1633
"CRONING"
Crown Lock Co.
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