US2974339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust mop
Assignee: KEY PRODUCTS Co
•
Filing: 1958-04-25
•
Granted: 1961-03-14
•
Expires: 1978-04-25
Abstract
No abstract record available.
Inventors
- 👤 Kurt R Keydel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:21
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1047703A
Cited
US1087793A
Cited
US1969800A
Cited
US2134990A
Cited
US2174633A
Cited
US2233289A
Cited
US2487899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-13 | 1964-09-12 | 1965-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-13 | 1968-09-12 | 1969-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-13 | 1972-09-12 | 1973-03-14 | $7700.00 | Window Closed / Lapsed |