Patent US3304680A successfully refreshed from Google Patents.
US3304680A
Expired / Lapsed
US
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Interlocking structural system for buildings
Assignee: ANEL ENGINEERING IND Inc
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Filing: 1963-12-13
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Granted: 1967-02-21
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Expires: 1983-12-13
Abstract
No abstract record available.
Inventors
- 👤 Benjamin F Birdwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:56
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/30; E04B5/00; E04B5/16; E04B5/32; E04B5/36; E04B5/38; E04B5/40
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
211 words
A STRUCTURAL SYSTEM FOR USE IN A BUILDING COMPRISING A PLURALITY OF ELONGATED SECTIONS; EACH OF SAID SECTIONS COMPRISING A CHANNEL-LIKE MEMBER INCLUDING A SUBSTANTIALLY FLAT AND RECTANGULAR MID-PORTION, AND A PAIR OF SPACED AND SUBSTANTIALLY PARALLEL SIDE MEMBERS RESPECTIVELY FIXEDLY ATTACHED TO SAID MID-PORTION ALONG THE SIDE EDGES THEREOF AND PERPENDICULARLY EXTENDING FROM SAID MID-PORTION IN THE SAME DIRECTION; SAID SECTIONS BEING ARRANGED IN SIDEBY-SIDE RELATIONSHIP WITH THE ADJACENT SIDE MEMBERS OF ADJACENT ONES OF SAID SECTIONS BEING IN ABUTMENT WITH ONE ANOTHER AND WITH SAID MID-PORTIONS OF SAID SECTIONS ESTABLISHING ONE FACE OF SAID STRUCTURE, SNAP-LOCK INTERLOCKING MEANS RESPECTIVELY INTERCONNECTING SAID ADJACENT SIDE MEMBERS ADJACENT THE DISTAL EDGES OF SAID ADJACENT SIDE MEMBERS, EACH OF SAID SECTIONS ADDITIONALLY INCLUDING A CONCRETE MEMBER AND REINFORCING MEANS EMBEDDED THEREIN RECEIVE IN SAID CHANNEL-LIKE MEMBER, A CONCRETE SLAB ATTACHED TO SAID PLURALITY OF ELONGATED SECTIONS REMOTE FROM SAID MID-PORTIONS THEREOF OF ESTABLISH ANOTHER FACE OF SAID STRUCTURE REMOTE FROM SAID ONE FACE, SAID INTERLOCKING MEANS INCLUDING ABUTMENT MEANS ATTACHED TO ONE OF SAID ADJACENT SIDE MEMBERS AND EDGE MEANS ATTACHED TO THE OTHER OF SAID ADJACENT SIDE MEMBERS LOCKED BEHIND SAID ABUTMENT MEANS FOR PREVENTING MOVEMENT OF SAID ADJACENT SIDE MEMBERS AWAY FROM ONE ANOTHER IN A DIRECTION PARALLEL TO SAID MID-PORTION.
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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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |