US3221467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural member
Assignee: American Metalcore Systems Inc
•
Filing: 1963-02-01
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Granted: 1965-12-07
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Expires: 1983-02-01
Abstract
No abstract record available.
Inventors
- 👤 William K Henkels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:41
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/08; E04C3/09; E04C2003/0486; E04C2003/0491
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
A CHORD ASSEMBLY INCLUDING A STRUCTURAL MEMBER COMPRISING A BASE SECTION, THE LATERAL MARGINS OF SAID BASE SECTION EXTENDING DOWNWARDLY A PREDETERMINED DISTANCE TO PROVIDE CONVERGING WALLS, VERTICALS WALLS ISSUING FROM THE LOWER TERMINALS OF SAID CONVERGING WALLS, SAID VERTICAL WALLS EXTENDING UPWARDLY IN PARALLEL SPACED RELATION INTO SUPPORTING CONTIGUOUS ENGAGEMENT WITH SAID BASE SECTION, THEREBY FORMING A LONGITUDINAL RECESS BETWEEN SAID VERTICAL WALLS, A SECOND STRUCTURAL MEMBER SIMILAR IN CONSTRUCTION TO SAID FIRST STRUCTURAL MEMBER, THE STRUCTURAL MEMBERS BEING VERTICALLY SPACED WITH THEIR LONGITUDINAL RECESSES IN OPPOSED RELATIONSHIP, WEB MEMBERS BETWEEN SAID STRUCTURAL MEMBERS, THE UPPER AND LOWER LIMITS OF SAID WEB MEMBERS BEING POSITIONED WITHIN THE LONGITUDINAL RECESSES OF THE STRUCTURAL MEMBERS, AND
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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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |