US2950497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner nozzle construction
Assignee: General Electric Co
•
Filing: 1957-08-08
•
Granted: 1960-08-30
•
Expires: 1977-08-08
Abstract
No abstract record available.
Inventors
- 👤 Robert M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:02
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/06; A47L9/0633; A47L9/064; A47L9/0653
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US993694A
Cited
US1803921A
Cited
US1812493A
Cited
US1745355A
Cited
US2034196A
Cited
US1968974A
Cited
US2153457A
Cited
US2334733A
Cited
US2540917A
Cited
US2734215A
Cited
US2807824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |