Est. March 2001  ·  10,244 Listings on File

Padlock Patent — Combination

Patent 20879

Inventor: Winning, Robert K.

View on USPTO / Google Patents ↗
Patent # 20879
Issue Date October 4, 1938
Inventor Winning, Robert K.
Assigned To Dudley Lock Corp.
Type Combination

Patent Drawings

Patent 20879 drawing 1 Drawing 1 Patent 20879 drawing 2 Drawing 2

Patent Notes

Classification: 70/25

Patent Details

Patent Number 20879
Issue Date October 4, 1938
Inventor Winning, Robert K.
Assigned To Dudley Lock Corp.
Patent Type Combination
External Link https://patents.google.com/patent/US20879 ↗

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5 listings
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Dudley Triple Metals Corp.
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"DUDLEY"
Dudley Lock Corp.
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#5695
"DUDLEY"
Dudley Lock Corp.
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"DUDLEY"
#5693
"DUDLEY"
Dudley Triple Metals Corp.
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"DUDLEY"
#922
"DUDLEY"
Dudley Lock Corp. Patent #'s 1291228 1369850 1508139 1655002 1736183
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