Patent US3333389A successfully refreshed from Google Patents.
US3333389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tapered girder construction
Assignee: LIHAP IND
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Filing: 1964-06-29
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Granted: 1967-08-01
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Robert D Lichti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:40
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/11; E04C2003/0404; E04C2003/0408; E04C2003/0413; E04C2003/0426; E04C2003/0434; E04C2003/0443; E04C2003/0452
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
AN ELONGATE, TAPERED GIRDER INCLUDING A SUBSTANTIALLY TRIANGULAR VERTICALLY DISPOSED CENTRAL WEB, AND THREE STRAIGHT ELONGATE FLANGE SECTIONS EXTENDING ABOUT THE PERIMETER OF THE WEB, SAID WEB BEING CORRUGATED THROUGHOUT ITS LONGITUDINAL EXTENT TO ESTABLISH A PLURALITY OF INTEGRALLY JOINED, FLAT PANELS EXTENDING ALTERNATELY LATERALLY AND DIAGONALLY THROUGH THE CENTRAL VERTICAL PLANE OF THE GIRDER, SAID FLANGE SECTIONS BEING FIXED TO THE ADJACENT EDGES OF THE WEB BY WELDING.
Claim 2
Dependent Claim
69 words
AN ELONGATE, TAPERED GIRDER INCLUDING A SUBSTANTIALLY TRIANGULAR VERTICALLY DISPOSED CENTRAL WEB, AND THREE STRAIGHT ELONGATE FLANGE SECTIONS EXTENDING ABOUT THE PERIMETER OF THE WEB, SAID WEB BEING CORRUGATED THROUGHOUT ITS LONGITUDINAL EXTENT TO ESTABLISH A PLURALITY OF INTEGRALLY JOINED, FLAT PANELS EXTENDING ALTERNATELY LATERALLY AND DIAGONALLY THROUGH THE CENTRAL VERTICAL PLANE OF THE GIRDER, SAID FLANGE SECTIONS BEING FIXED TO THE ADJACENT EDGES OF THE WEB BY WELDING.
References Cited (Backward Citations)
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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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |