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US2651934A Expired / Lapsed US ⏱️ 0.0 years remaining

Door lock

Assignee: Individual
•
Filing: 1950-04-20
•
Granted: 1953-09-15
•
Expires: 1970-04-20
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Abstract

No abstract record available.

Inventors

  • 👤 Abraham E Chesler

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 08:10
CPC Classifications
E; E05; E05B; E05B55/00; E05B13/00; E05B13/002; E05B13/004; Y; Y10; Y10S; Y10S70/00; Y10S70/42; Y10T; Y10T292/00; Y10T292/96; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/5394; Y10T70/5465; Y10T70/5469; Y10T70/5473; Y10T70/55; Y10T70/70; Y10T70/7441; Y10T70/7915; Y10T70/7927

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US311753A Cited
US483318A Cited
US1652660A Cited
US914670A Cited
US924421A Cited
US1550054A Cited
US1547357A Cited
US1720804A Cited
US2089146A Cited
US2253257A Cited
US2303790A Cited
US2442763A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1956-09-14 1957-03-16 1957-09-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1960-09-14 1961-03-16 1961-09-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1964-09-14 1965-03-16 1965-09-15 $7700.00 Window Closed / Lapsed

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