Patent US3619958A successfully refreshed from Google Patents.
US3619958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overhead covering in a dual cable system for polygonal elliptical or circular plan buildings etc.
Assignee: GRANDI PADIGLIONI SpA
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Filing: 1970-03-24
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Granted: 1971-11-16
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Expires: 1990-03-24
Abstract
Abstract AN ANNULAR OVERHEAD COVERING INCLUDING AN OUTSIDE SEMI-RIGID RING, AN INSIDE SEMI-RIGID RING OF A DIAMETER SMALLER THAN THE OUTSIDE RING, A FIRST PLURALITY IF SUPPORTING CABLES CONNECTING THE LOWER PORTION OF THE INSIDE RING WITH THE UPPER PORTION OF THE OUTSIDE RING, A SECOND PLURALITY OF TENSIONING CABLES CONNECTING THE UPPER PORTION OF THE INSIDE RING WITH THE LOWER PORTION OF THE OUTSIDE RING, MEANS FOR SUPPORTING THE OUTSIDE RING, AND MEANS CARRIED BY THE CABLES FOR COVERING THE SPACE BETWEEN THE RINGS.
Inventors
- 👤 Aldo Viesi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:21
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/14; E04H; E04H15/00; E04H15/02; E04H15/04; E04H3/00; E04H3/10; E04H3/12
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |