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US2566816A Expired / Lapsed US ⏱️ 0.0 years remaining

Expansible plug closure

Assignee: Individual
•
Filing: 1948-10-20
•
Granted: 1951-09-04
•
Expires: 1968-10-20
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Abstract

No abstract record available.

Inventors

  • 👤 Worth H Work

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-22 21:30
CPC Classifications
B; B65; B65D; B65D39/00; B65D39/12; F; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/128; F16L55/132

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US624363A Cited
US1065896A Cited
US1506418A Cited
US1597068A Cited
US1555759A Cited
US1702532A Cited
US2214732A Cited
US2312738A Cited
US2439628A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1954-09-03 1955-03-05 1955-09-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1958-09-03 1959-03-05 1959-09-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1962-09-03 1963-03-05 1963-09-04 $7700.00 Window Closed / Lapsed

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