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US2936606A Expired / Lapsed US ⏱️ 0.0 years remaining

Deadbolt lock

Assignee: Emhart Industries Inc
•
Filing: 1957-05-17
•
Granted: 1960-05-17
•
Expires: 1977-05-17
📄 Original PDF 🌐 Google Patents

Abstract

No abstract record available.

Inventors

  • 👤 Nicholas A Welch
  • 👤 Wolf Charles

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 22:55
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/0017; E05B23/00; E05B65/00; E05B65/0028; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/1014; Y10T292/1016; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5246; Y10T70/5296; Y10T70/5319; Y10T70/5341; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/55

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US480973A Cited
US1649424A Cited
GB571873A Cited
US2660875A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1963-05-17 1963-11-16 1964-05-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1967-05-17 1967-11-16 1968-05-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1971-05-17 1971-11-16 1972-05-17 $7700.00 Window Closed / Lapsed

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