US2938255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting of reinforced concrete beams
Assignee: RICHARD LEES Ltd
•
Filing: 1957-09-19
•
Granted: 1960-05-31
•
Expires: 1977-09-19
Abstract
No abstract record available.
Inventors
- 👤 Oakden Richard Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:14
CPC Classifications
B; B28; B28B; B28B23/00; B28B23/02; B28B23/04; B28B23/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1920716A
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US938223A
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US1422150A
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US1674445A
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US1600696A
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US1707446A
Cited
US2225015A
Cited
FR818955A
Cited
US2356852A
Cited
US2731698A
Cited
US2717435A
Cited
GB713256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |