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US3013337A Expired / Lapsed US ⏱️ 0.0 years remaining

Navigational computer and plotter

Assignee: Individual
•
Filing: 1958-08-13
•
Granted: 1961-12-19
•
Expires: 1978-08-13
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Abstract

No abstract record available.

Inventors

  • 👤 Hurwitz Dan Norman

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 22:28
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/20

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US2390622A Cited
DE190823C Cited
DE306241C Cited
US1713025A Cited
GB247822A Cited
US2004951A Cited
US2156524A Cited
US2300448A Cited
US2415277A Cited
US2425097A Cited
US2547955A Cited
US2632963A Cited
GB721444A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1964-12-18 1965-06-19 1965-12-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1968-12-18 1969-06-19 1969-12-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1972-12-18 1973-06-19 1973-12-19 $7700.00 Window Closed / Lapsed

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