Patent US2577564A successfully refreshed from Google Patents.
Patent US2516246A successfully refreshed from Google Patents.
US2516246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nozzle for suction cleaner
Assignee: Individual
•
Filing: 1945-12-14
•
Granted: 1950-07-25
•
Expires: 1965-12-14
Abstract
No abstract record available.
Inventors
- 👤 Edward O Norris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:41
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US403566A
Cited
US493084A
Cited
US953267A
Cited
US1013606A
Cited
US1145555A
Cited
US1238903A
Cited
US1874758A
Cited
US1888570A
Cited
GB433467A
Cited
US2064903A
Cited
US2146763A
Cited
US2218595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-24 | 1954-01-23 | 1954-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-24 | 1958-01-23 | 1958-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-24 | 1962-01-23 | 1962-07-25 | $7700.00 | Window Closed / Lapsed |