US2756453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust mop
Assignee: Tennant Co
•
Filing: 1950-07-13
•
Granted: 1956-07-31
•
Expires: 1970-07-13
Abstract
No abstract record available.
Inventors
- 👤 Edwin A Mattson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:59
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/20; A47L13/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US618873A
Cited
US805301A
Cited
US1676880A
Cited
US1784567A
Cited
US1811336A
Cited
US1986924A
Cited
DE637458C
Cited
GB444067A
Cited
US2151425A
Cited
US2256299A
Cited
US2254648A
Cited
US2296994A
Cited
US2264736A
Cited
US2614281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |