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US2878665A Expired / Lapsed US ⏱️ 0.0 years remaining

Combination bunker and residential building structure

Assignee: Individual
•
Filing: 1955-10-20
•
Granted: 1959-03-24
•
Expires: 1975-10-20
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Abstract

No abstract record available.

Inventors

  • 👤 Rupert G Crabbe

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 02:00
CPC Classifications
E; E04; E04H; E04H9/00; E04H9/04; E04H9/10

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US288354A Cited
US687501A Cited
AT156962B Cited
GB513468A Cited
GB518742A Cited
GB526181A Cited
DE709650C Cited
US2253527A Cited
US2346196A Cited
GB550464A Cited
FR905834A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1962-03-23 1962-09-22 1963-03-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1966-03-23 1966-09-22 1967-03-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1970-03-23 1970-09-22 1971-03-24 $7700.00 Window Closed / Lapsed

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