US2881610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cleaning materials
Assignee: Individual
•
Filing: 1956-04-19
•
Granted: 1959-04-14
•
Expires: 1976-04-19
Abstract
No abstract record available.
Inventors
- 👤 Harold H Leary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:52
CPC Classifications
D; D06; D06F; D06F43/00; D06F43/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US89166A
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US2344982A
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US2489278A
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US2724955A
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DE850287C
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US2742773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |