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US2843116A Expired / Lapsed US ⏱️ 0.0 years remaining

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Assignee: Individual
•
Filing: 1955-11-30
•
Granted: 1958-07-15
•
Expires: 1975-11-30
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Abstract

No abstract record available.

Inventors

  • 👤 Grannan Clara Margaret

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 06:59
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/01; A61F5/03

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US244561A Cited
CA506372A Cited
US741521A Cited
US2022474A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1961-07-14 1962-01-13 1962-07-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1965-07-14 1966-01-13 1966-07-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1969-07-14 1970-01-13 1970-07-15 $7700.00 Window Closed / Lapsed

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