US2333829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scrubbing attachment for portable vacuum-type floor sweepers
Assignee: Individual
•
Filing: 1941-03-01
•
Granted: 1943-11-09
•
Expires: 1961-03-01
Abstract
No abstract record available.
Inventors
- 👤 Merrill H Terry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:24
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4094; A47L11/29; A47L11/30; A47L11/302; A47L11/4061; A47L11/4075; A47L11/408; A47L11/4083; A47L11/4088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-11-08 | 1947-05-10 | 1947-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-11-08 | 1951-05-10 | 1951-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-11-08 | 1955-05-10 | 1955-11-09 | $7700.00 | Window Closed / Lapsed |