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US2745313A Expired / Lapsed US ⏱️ 0.0 years remaining

Controlled reading projector

Assignee: Individual
•
Filing: 1952-05-20
•
Granted: 1956-05-15
•
Expires: 1972-05-20
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Abstract

No abstract record available.

Inventors

  • 👤 Stanford E Taylor

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 17:49
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/08; G03B23/12

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US2379534A Cited
US1501842A Cited
US1049196A Cited
US1217979A Cited
US1190370A Cited
US1204585A Cited
US1479404A Cited
US1540318A Cited
US1762378A Cited
US1600535A Cited
US1626786A Cited
US2228782A Cited
US2357593A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1959-05-15 1959-11-14 1960-05-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1963-05-15 1963-11-14 1964-05-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1967-05-15 1967-11-14 1968-05-15 $7700.00 Window Closed / Lapsed

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