Patent US3589790A successfully refreshed from Google Patents.
Patent US3562992A successfully refreshed from Google Patents.
US3562992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building structural element
Assignee: Individual
•
Filing: 1968-11-29
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Granted: 1971-02-16
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Expires: 1988-11-29
Abstract
Abstract A BUILDING STRUCTURAL ELEMENT FORMED OF METALLIC OR PLASTIC EXTRUSIONS WHICH MAY BE SNAPPED TOGETHER TO FORM INDIVIDUAL BOX ELEMENTS WHICH IN TURN CAN BE SNAPPED TOGETHER AS PRE-CUT EXTRUSIONS IN THE PROPER SEQUENCE TO FORM THE COMPLETE BUILDING STRUCTURE.
Inventors
- 👤 Lewis R Kinsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:55
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/7407; E04B2/7448; E04B2/56; E04B2/58; E04B2/60; E04B2/62; E04C; E04C2/00; E04C2/30; E04C2/40; E06; E06B; E06B3/00; E06B3/04; E06B3/06; E06B3/08; E06B3/12; E06B3/14; E06B3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |