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US736669A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of cleaning filters.

Assignee: Individual
•
Filing: 1901-06-07
•
Granted: 1903-08-18
•
Expires: 1921-06-07
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Abstract

No abstract record available.

Inventors

  • 👤 Theodore J Zoeller

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 09:21
CPC Classifications
B; B09; B09C; B09C1/00; B09C1/08; B09C1/085; C; C02; C02F; C02F1/00; C02F1/001

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) 1906-08-17 1907-02-16 1907-08-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1910-08-17 1911-02-16 1911-08-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1914-08-17 1915-02-16 1915-08-18 $7700.00 Window Closed / Lapsed

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