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US2813154A Expired / Lapsed US ⏱️ 0.0 years remaining

Telephone call indicator

Assignee: Individual
•
Filing: 1954-04-16
•
Granted: 1957-11-12
•
Expires: 1974-04-16
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Abstract

No abstract record available.

Inventors

  • 👤 Rabinow Jacob

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 10:57
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/82; H04M1/64; H04M1/65; H04M1/654; H04M19/00; H04M19/02; H04M19/04

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US1966184A Cited
US2506279A Cited
US2549548A Cited
US2616972A Cited
US2562069A Cited
US2572815A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1960-11-11 1961-05-13 1961-11-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1964-11-11 1965-05-13 1965-11-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1968-11-11 1969-05-13 1969-11-12 $7700.00 Window Closed / Lapsed

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