Patent US2711223A successfully refreshed from Google Patents.
US2711223A
Expired / Lapsed
US
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Prefabricated dry well
Assignee: Individual
•
Filing: 1951-06-06
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Granted: 1955-06-21
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Expires: 1971-06-06
Abstract
No abstract record available.
Inventors
- 👤 Maurice E Temple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:03
CPC Classifications
E; E03; E03F; E03F1/00; E03F1/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US225822A
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US575553A
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US1155970A
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US1363535A
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US1661983A
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US1887368A
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US2237048A
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US2482870A
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US2548541A
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US2583618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-20 | 1958-12-20 | 1959-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-20 | 1962-12-20 | 1963-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-20 | 1966-12-20 | 1967-06-21 | $7700.00 | Window Closed / Lapsed |