US2454430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hygienic dustpan
Assignee: Individual
•
Filing: 1945-12-10
•
Granted: 1948-11-23
•
Expires: 1965-12-10
Abstract
No abstract record available.
Inventors
- 👤 Cortes Edmundo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:35
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/50; A47L13/52
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US502235A
Cited
US509689A
Cited
US569829A
Cited
US569830A
Cited
US608635A
Cited
US1106282A
Cited
US1203697A
Cited
US1410369A
Cited
US1605534A
Cited
US1729127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-23 | 1952-05-24 | 1952-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-23 | 1956-05-24 | 1956-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-23 | 1960-05-24 | 1960-11-23 | $7700.00 | Window Closed / Lapsed |