US3559353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible building structures
Assignee: EASIFOLD BUILDINGS Ltd
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Filing: 1968-11-05
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Granted: 1971-02-02
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Expires: 1988-11-05
Abstract
Abstract THE INVENTION COMPRISES A COLLAPSIBLE BUILDING STRUCTURE INCORPORATING LATTICEWORK UNITS OF PIVOTED TOEGETHER CROSSED LINKS TO FORM PARALLEL BEAMS OR TRUSSES JOINED BY PURLINS, AND WHICH UNITS CAN BE EXTENDED IN ARCHED FORMATION. THE LINKS OF THE UNITS MAY BE ARRANGED IN A HORIZONTAL OR VERTICAL PLANE AND FLEXIBLE COVERING IS LOCATED OVER THE FRAME WORK.
Inventors
- 👤 Gordon Charles Partridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:04
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/32; E04H15/34; E04H15/44; E04H15/48; E04H15/50; E04B; E04B1/00; E04B1/343; E04B1/344; E04B1/3441
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |