US2440754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing concrete beams
Assignee: Individual
•
Filing: 1946-09-11
•
Granted: 1948-05-04
•
Expires: 1966-09-11
Abstract
No abstract record available.
Inventors
- 👤 George E Nagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:28
CPC Classifications
B; B28; B28B; B28B23/00; B28B23/02; B28B23/04; B28B23/043; B28B1/00; B28B1/20; B28B7/00; B28B7/0064; B28B7/36; B28B7/364
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB228864A
Cited
US1857233A
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GB323281A
Cited
US1971088A
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US1931597A
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US2166175A
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US2232837A
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US2292444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-04 | 1951-11-03 | 1952-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-04 | 1955-11-03 | 1956-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-04 | 1959-11-03 | 1960-05-04 | $7700.00 | Window Closed / Lapsed |