Patent US3629384A successfully refreshed from Google Patents.
US3629384A
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US
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Method for forming composite building elements
Assignee: TEGELINDUSTRIENS CENTRALKONTOR
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Filing: 1969-09-04
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Granted: 1971-12-21
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Expires: 1989-09-04
Abstract
Abstract A METHOD FOR THE FORMATION OF BUILDING ELEMENTS OF THE TYPE HAVING A PLURALITY OF BRICKS, TILES OR STONES JOINED TOGETHER BY MORTAR. A MASS OF FOAMABLE PLASTICS MATERIAL IS POSITIONED IN A MOLD AND THE BRICKS OR STONES ARE PARTIALLY INCREASED THEREIN, THUS KEEPING THEM IN POSITION AND PREVENTING FEATHERING OF MORTAR ON TO THE ELEMENT FACE OR OTHER UNSIGHTLY RESULTS IN THE FORMING PROCESS.
Inventors
- 👤 Reinhold Magnus Elgenstierna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:07
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/04; E04C2/041; E04C2/042; B; B28; B28B; B28B19/00; B28B19/0053; Y; Y10; Y10S; Y10S264/00; Y10S264/44; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249984
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |