US3470635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling the output of dredging,loading and unloading implements
Assignee: Fried Krupp AG
•
Filing: 1966-12-14
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Granted: 1969-10-07
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Expires: 1986-12-14
Abstract
No abstract record available.
Inventors
- 👤 Alexander Langner
- 👤 Raimonds Sukurs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:07
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/18; E02F3/22; E02F3/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2221396A
Cited
US2639569A
Cited
US3064357A
Cited
US3223964A
Cited
US3258865A
Cited
US3196599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |