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US2685236A
Expired / Lapsed
US
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Concrete working method
Assignee: Individual
•
Filing: 1947-07-22
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Granted: 1954-08-03
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Expires: 1967-07-22
Abstract
No abstract record available.
Inventors
- 👤 Edward G Wisniewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:29
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/22; E01C19/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US909499A
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US1092280A
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FR511247A
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US1238497A
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US1514663A
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US1586325A
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US2024184A
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US2180660A
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US2241098A
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US2424407A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |