US2648895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prestressing structural members
Assignee: Individual
•
Filing: 1946-03-19
•
Granted: 1953-08-18
•
Expires: 1966-03-19
Abstract
No abstract record available.
Inventors
- 👤 Lincoln K Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:02
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/10; F; F16; F16F; F16F1/00; F16F1/02; E04C2003/0404; E04C2003/0408; E04C2003/0421; E04C2003/0426; E04C2003/043; E04C2003/0434; E04C2003/0443; E04C2003/0447; E04C2003/046; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49609; Y10T29/49611; Y10T29/49616; Y10T29/49618
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US73983A
Cited
US291814A
Cited
US450836A
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US1638516A
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US1725439A
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US1784866A
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GB315216A
Cited
US1963056A
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US1987166A
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US2056816A
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US2141220A
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US2204793A
Cited
US2314976A
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US2234850A
Cited
US2292363A
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GB564311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |