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US3377124A Expired / Lapsed US ⏱️ 0.0 years remaining

Fiber-tip pen

Assignee: Dai Nihon Bungu Co Ltd
•
Filing: 1965-08-31
•
Granted: 1968-04-09
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Expires: 1985-08-31
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Abstract

No abstract record available.

Inventors

  • 👤 Matsumoto Hiroyuki

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 16:28
CPC Classifications
B; B43; B43K; B43K5/00; B43K5/18; B43K5/1818; B43K5/1827; B43K5/1836; B43K5/1845

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US2210662A Cited
GB746815A Cited
GB929953A Cited
US3113336A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1971-04-09 1971-10-09 1972-04-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1975-04-09 1975-10-09 1976-04-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1979-04-09 1979-10-09 1980-04-09 $7700.00 Window Closed / Lapsed

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