Patent JPS6345666A successfully refreshed from Google Patents.
US3013395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
River bottom sand accumulation remover
Assignee: Individual
•
Filing: 1959-07-28
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Granted: 1961-12-19
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Expires: 1979-07-28
Abstract
No abstract record available.
Inventors
- 👤 John A Gaylord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:33
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/02; E02B3/023; B; B01; B01D; B01D21/00; B01D21/24; B01D21/245; B01D21/2472; Y; Y02; Y02A; Y02A10/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US510713A
Cited
AT52967B
Cited
FR783259A
Cited
US2442358A
Cited
US2436630A
Cited
US2673451A
Cited
US2907461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-18 | 1965-06-19 | 1965-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-18 | 1969-06-19 | 1969-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-18 | 1973-06-19 | 1973-12-19 | $7700.00 | Window Closed / Lapsed |