Patent US4991009A successfully refreshed from Google Patents.
Patent US4572846A successfully refreshed from Google Patents.
Patent US2518183A successfully refreshed from Google Patents.
US2518183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary wiper floor scrubbing apparatus
Assignee: Individual
•
Filing: 1947-05-03
•
Granted: 1950-08-08
•
Expires: 1967-05-03
Abstract
No abstract record available.
Inventors
- 👤 William C Renne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:46
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/408; A47L11/4083; A47L11/29; A47L11/292; A47L11/4013; A47L11/4016; A47L11/4022; A47L11/4036; A47L11/4041; A47L11/4063; A47L11/4066; A47L11/4069
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1644859A
Cited
GB189916895A
Cited
US715408A
Cited
US870454A
Cited
US967156A
Cited
US1010097A
Cited
US1250131A
Cited
US1268963A
Cited
US1391754A
Cited
US1546531A
Cited
US1661979A
Cited
US1759881A
Cited
US1791812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |