US3609830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for casting monolithic concrete structures
Assignee: Individual
•
Filing: 1969-05-12
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Granted: 1971-10-05
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Expires: 1989-05-12
Abstract
Abstract A METHOD OF CASTING HOLLOW MONOLITHIC STRUCTURE OF CONCRETE AND APPARATUS THEREFOR INCLUDING A CASTING PLANT WITH A PIT AND TRACK MEANS TO SUPPORT A CASTING CARRIAGE OVER THE PIT. MOBILE MEANS IS PROVIDED AROUND THE PIT FOR HANDLING THE OUTER FORM WALLS OF THE CASTING MOLD AND MEANS IS PROVIDED IN THE PIT FOR SUPPORTING AND FOR RAISING AND LOWERING INNER FORM WALLS FOR THE CASTING MOLD.
Inventors
- 👤 William E Myklebost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:44
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/22
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |