US2844840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination wet mop, dry mop, and vacuum cleaner
Assignee: Individual
•
Filing: 1955-04-22
•
Granted: 1958-07-29
•
Expires: 1975-04-22
Abstract
No abstract record available.
Inventors
- 👤 Ruben L Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:52
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/408; A47L11/4088; A47L11/29; A47L11/30; A47L11/4013; A47L11/4016; A47L11/4027; A47L11/403; A47L11/4036; A47L11/4044; A47L11/4083
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US930628A
Cited
US927668A
Cited
US1042713A
Cited
US1982345A
Cited
US1929345A
Cited
US2202989A
Cited
US2292435A
Cited
US2277069A
Cited
US2348861A
Cited
US2549181A
Cited
GB676158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |