US3043430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sand skimmer
Assignee: Stewart Sand & Material Co
•
Filing: 1959-11-18
•
Granted: 1962-07-10
•
Expires: 1979-11-18
Abstract
No abstract record available.
Inventors
- 👤 Henry J Gish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:36
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/48; B03B5/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US895363A
Cited
US1002017A
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US2150226A
Cited
US2460801A
Cited
US2468005A
Cited
US2606660A
Cited
US2491912A
Cited
US2646882A
Cited
US2621791A
Cited
US2931502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |