US3605580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mobile extruder for forming street curbs
Assignee: Individual
•
Filing: 1969-06-26
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Granted: 1971-09-20
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Expires: 1989-06-26
Abstract
Abstract A MOBILE EXTRUDER IS DISCLOSED HEREIN FOR LAYING A CONTINUOUS STRIP OF CONCRETE OR CEMENT PRODUCT IN THE SHAPE OF A CURB ONTO A STREET SURFACE. SELF-LEVELING MECHANISM IS CARRIED ON THE EXTRUDER MAINTAINING THE EXTRUDING ORIFICE LEVEL WITH RESPECT TO THE STREET SURFACE AND SENSING DEVICES ARE INCORPORATED INTO THE MECHANISM FOR DETECTING NON-LEVEL SURFACE CONDITIONS AND FOR ACTUATING THE MECHANISM TO COMPENSATE FOR SUCH CONDITIONS. D R A W I N G
Inventors
- 👤 Bernard Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:01
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4886; E01C19/4893
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |