US480353AUS480353DAUS480353AUS 480353 AUS480353 AUS 480353AUS 480353D AUS480353D AUS 480353DAUS 480353 AUS480353 AUS 480353A
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US
United States
Prior art keywords
uhlenhart
model
patented aug
umbrella rib
umbrella
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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Publication date
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Publication of US480353ApublicationCriticalpatent/US480353A/en