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US77952A Expired / Lapsed US ⏱️ 0.0 years remaining

Impbovement in vulcanizing india-eubbee oae-speings and othee aeticles

Assignee: —
•
Filing: —
•
Granted: 1868-05-19
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Expires: 1885-05-19
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Abstract

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Inventors

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Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 08:56
CPC Classifications
B; B29; B29C; B29C35/00; B29C35/02; B29C35/04; B29C35/06; B29C35/065

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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1871-05-19 1871-11-18 1872-05-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1875-05-19 1875-11-18 1876-05-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1879-05-19 1879-11-18 1880-05-19 $7700.00 Window Closed / Lapsed

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