Patent US4192145A successfully refreshed from Google Patents.
US3282012A
Expired / Lapsed
US
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Corrugated multilayer roofing elements
Assignee: Individual
•
Filing: 1963-10-08
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Granted: 1966-11-01
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Expires: 1983-10-08
Abstract
No abstract record available.
Inventors
- 👤 Pradal Roger Viguier Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:35
CPC Classifications
E; E04; E04D; E04D3/00; E04D3/35; E04C; E04C2/00; E04C2/54; E04D3/24; E04D3/28; E04D3/357; G; G01; G01K; G01K13/00; G01K13/12; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24694
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
113 words
A RECTANGULAR CORRUGATED ROOFING ELEMENT COMPRISING AN UPPER SHEET HAVING CORRUGATIONS WHICH ARE STRAIGHT SUPERIMPOSED UPON A LOWER SHEET HAVING CORRUGATIONS WHICH CONFORM TO AND COINCIDE WITH THOSE OF THE UPPER CORRUGATED SHEET AROUND ALL FOUR EDGES OF THE SHEETS BUT CERTAIN OF WHICH ARE NOT STRAIGHT LONGITUDINALLY SO THAT THE SHEETS ARE SPACED APART INTERMEDIATELY, SAID EDGES BEING SEALED TOGETHER AND THE LONGITUDINAL EDGES OF BOTH SHEETS BEING TURNED UP PERPENDICULARLY TO THE GENERAL PLANE OF THE ELEMENT, PORTIONS OF ONE OF THE SHEETS WHICH LIE ADJACENT TO THE TURNED-UP EDGES THEREOF BEING EACH DISPOSED IN THE SAME PLANE AS SAID ADJACENT TURNED-UP EDGE BUT OUT OF CONTACT WITH THE OTHER SHEET.
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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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |