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US640420A Expired / Lapsed US ⏱️ 0.0 years remaining

Button-loop.

Assignee: Individual
•
Filing: 1896-08-17
•
Granted: 1900-01-02
•
Expires: 1916-08-17
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Abstract

No abstract record available.

Inventors

  • 👤 Samuel I Schwartz

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 14:00
CPC Classifications
A; A41; A41F; A41F15/00; A41F15/02; Y; Y10; Y10T; Y10T24/00; Y10T24/34; Y10T24/3467; Y10T24/3476; Y10T24/39; Y10T24/45; Y10T24/45225; Y10T24/45602; Y10T24/45759; Y10T24/45764; Y10T24/46; Y10T24/4604; Y10T24/4657; Y10T24/47; Y10T24/4709

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1903-01-02 1903-07-04 1904-01-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1907-01-02 1907-07-04 1908-01-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1911-01-02 1911-07-04 1912-01-03 $7700.00 Window Closed / Lapsed

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