US2449997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible suction cleaner with agitator drive disengaging means
Assignee: Eureka Williams Co
•
Filing: 1943-05-03
•
Granted: 1948-09-28
•
Expires: 1963-05-03
Abstract
No abstract record available.
Inventors
- 👤 Paul T Hahn
- 👤 George R Coss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:22
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1294473A
Cited
US1332235A
Cited
US1458939A
Cited
US1660331A
Cited
US1768616A
Cited
US1742671A
Cited
US1933629A
Cited
GB438622A
Cited
US2080480A
Cited
GB488452A
Cited
US2340347A
Cited
US2322223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-28 | 1952-03-29 | 1952-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-28 | 1956-03-29 | 1956-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-28 | 1960-03-29 | 1960-09-28 | $7700.00 | Window Closed / Lapsed |