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US2168695A Expired / Lapsed US ⏱️ 0.0 years remaining

Diving mask

Assignee: Individual
•
Filing: 1938-09-27
•
Granted: 1939-08-08
•
Expires: 1958-09-27
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Abstract

No abstract record available.

Inventors

  • 👤 Asari Kumaki

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 09:13
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/06; B; B63; B63C; B63C11/00; B63C11/02; B63C11/12; B63C11/14; F16K24/00; F16K24/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/7888; Y10T137/789

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1942-08-07 1943-02-06 1943-08-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1946-08-07 1947-02-06 1947-08-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1950-08-07 1951-02-06 1951-08-08 $7700.00 Window Closed / Lapsed

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