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US2418334A Expired / Lapsed US ⏱️ 0.0 years remaining

Protective mask

Assignee: Individual
•
Filing: 1943-06-23
•
Granted: 1947-04-01
•
Expires: 1963-06-23
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Abstract

No abstract record available.

Inventors

  • 👤 Coccellato John

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 22:03
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/02; A61F9/025

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US2126697A Cited
US2187932A Cited
US2106615A Cited
US2187542A Cited
US2283739A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1950-03-31 1950-09-30 1951-04-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1954-03-31 1954-09-30 1955-04-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1958-03-31 1958-09-30 1959-04-01 $7700.00 Window Closed / Lapsed

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