US1393680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction-dredge
Assignee: Individual
•
Filing: 1920-07-26
•
Granted: 1921-10-11
•
Expires: 1940-07-26
Abstract
No abstract record available.
Inventors
- 👤 Fruhling Otto
- 👤 Fruhling Curt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:55
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/88; E02F3/90; E02F3/92; E02F3/9256; E02F3/9268; E02F3/9281
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) | 1924-10-10 | 1925-04-11 | 1925-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-10-10 | 1929-04-11 | 1929-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-10-10 | 1933-04-11 | 1933-10-11 | $7700.00 | Window Closed / Lapsed |