US2743602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated foundation construction
Assignee: Individual
•
Filing: 1950-06-24
•
Granted: 1956-05-01
•
Expires: 1970-06-24
Abstract
No abstract record available.
Inventors
- 👤 Wilbur L Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:25
CPC Classifications
E; E02; E02D; E02D31/00; E02D31/10; E02D31/14; F; F42; F42C; F42C21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US869280A
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US1175376A
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GB261285A
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US1923645A
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US1978473A
Cited
US2105245A
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US2094393A
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US2264961A
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US2294556A
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US2332227A
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GB563869A
Cited
US2383544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |