US3801685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of constructing a building
Assignee: Individual
•
Filing: 1971-10-28
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Granted: 1974-04-02
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Expires: 1991-10-28
Abstract
Abstract A building having, at least in part, a domed surface is constructed by erecting side walls supported between vertical columns and then providing two structural roof layers spaced from each other with filler material between these layers. The stuctural layers are made in situ using fluent material which solidifies. The lower layer seves as the mold for the upper layer and means are used to pry the upper layer loose and lift it from the lower layer. The filler material suitably comprises a polymeric plastic compound foamed in situ.
Inventors
- 👤 R Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:18
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/04; E04B; E04B7/00; 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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |