Patent US1913670A successfully refreshed from Google Patents.
US1913670A
Expired / Lapsed
US
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Dredge
Assignee: SAN FRANCISCO BRIDGE Co
•
Filing: 1931-04-11
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Granted: 1933-06-13
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Expires: 1951-04-11
Abstract
No abstract record available.
Inventors
- 👤 Barrett G Hindes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:37
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/88; E02F3/90; E02F3/905; E02F9/00; E02F9/06; E02F9/062; E02F9/065; E02F9/26; Y; Y10; Y10S; Y10S37/00; Y10S37/906
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) | 1936-06-12 | 1936-12-12 | 1937-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-06-12 | 1940-12-12 | 1941-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-06-12 | 1944-12-12 | 1945-06-13 | $7700.00 | Window Closed / Lapsed |