US2621497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable dust collecting utensil
Assignee: Individual
•
Filing: 1951-08-24
•
Granted: 1952-12-16
•
Expires: 1971-08-24
Abstract
No abstract record available.
Inventors
- 👤 Davie Eprevel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:02
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/50; A47L13/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US338892A
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US569830A
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US822605A
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US1111428A
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US1593609A
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US2454430A
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US2544075A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |