US3437011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installation for controlling a pushing cylinder at a working face with power advanced supports
Assignee: Stamicarbon BV
•
Filing: 1967-01-03
•
Granted: 1969-04-08
•
Expires: 1987-01-03
Abstract
No abstract record available.
Inventors
- 👤 Abraham Van Gelder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:17
CPC Classifications
E; E21; E21D; E21D23/00; E21D23/006; E21D23/16; E21D23/18; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86919; Y10T137/87169; Y10T137/87217; Y10T137/87225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3301136A
Cited
US3357313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |