US2663894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum street cleaner
Assignee: Individual
•
Filing: 1950-05-31
•
Granted: 1953-12-29
•
Expires: 1970-05-31
Abstract
No abstract record available.
Inventors
- 👤 Marion A Elliotte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:30
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/08; E01H1/0827; E01H1/0836
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US514676A
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US1642895A
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US1604910A
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FR628869A
Cited
US1971349A
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GB486505A
Cited
US2131398A
Cited
US2142697A
Cited
US2231352A
Cited
US2248012A
Cited
US2496028A
Cited
US2492495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |