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US2559698A Expired / Lapsed US ⏱️ 0.0 years remaining

Stereoscopic magnifier

Assignee: Individual
•
Filing: 1949-10-06
•
Granted: 1951-07-10
•
Expires: 1969-10-06
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Abstract

No abstract record available.

Inventors

  • 👤 George L Bahre

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 17:26
CPC Classifications
G; G02; G02B; G02B25/00; G02B25/002; G02B25/004

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

DE291193C Cited
US230320A Cited
FR471602A Cited
GB149636A Cited
DE431083C Cited
FR628875A Cited
FR701940A Cited
US2149601A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1954-07-09 1955-01-08 1955-07-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1958-07-09 1959-01-08 1959-07-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1962-07-09 1963-01-08 1963-07-10 $7700.00 Window Closed / Lapsed

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