Patent US3562976A successfully refreshed from Google Patents.
US3562976A
Expired / Lapsed
US
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Roof construction for silos or the like
Assignee: FIBERDOME Inc
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Filing: 1969-03-03
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Granted: 1971-02-16
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Expires: 1989-03-03
Abstract
Abstract A GENERALLY DOME SHAPED ROOF FOR SILOS OR THE LIKE AND FABRICATED FROM INDIVIDUAL PANELS WHICH ARE FASTENED TOGETHER. THE PANELS ARE ADJUSTABLE RELATIVE TO ONE ANOTHER OT ACCOMMODATE SILOS OR BUILDINGS OF VARIOUS DIAMETERS. THE JOINTS BETWEEN THE PANELS ARE CONSTRUCTED SO AS TO BE WATERPROOF. BRACKET MEANS FOR HOLDING THE ROOF DOWN TIGHTLY ON THE TOP OF THE SILO AND ALSO TIGHTLY AGAINST THE OUTSIDE OF THE SILO.
Inventors
- 👤 Roger W Wollin
- 👤 Larry L Smiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:23
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/02; E04B7/028; E04B7/08; E04B7/10; E04B7/102
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 |