US3146549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and construction of prestressed structures
Assignee: Individual
•
Filing: 1959-06-08
•
Granted: 1964-09-01
•
Expires: 1979-06-08
Abstract
No abstract record available.
Inventors
- 👤 Arthur M James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:41
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/12; E04G2021/127
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
70 words
THE COMBINATION OF A SURFACE, AN ELONGATED FLEXIBLE LINE EXTENDING OVER THE SURFACE, A ROLLER POSITIONED BETWEEN SAID LINE AND SURFACE EXTENDING TRANSVERSELY OF SAID LINE, SAID ROLLER SPACING THE LINE FROM THE SURFACE WHEREBY THE TWO ARE OUT OF FRICTIONAL CONTACT, AND CLIP MEANS HOLDING SAID ROLLER ON SAID LINE WITH SAID ROLLER FREE TO TRAVERSE ON ROTATION OF THE ROLLER IN A DIRECTION EXTENDING LONGITUDINALLY OF SAID LINE.
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US1291079A
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US1931470A
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US2706496A
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GB754956A
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US2959895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |