US1968974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner floor tool
Assignee: Air Way Electric Appliance Corp
•
Filing: 1932-07-30
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Granted: 1934-08-07
•
Expires: 1952-07-30
Abstract
No abstract record available.
Inventors
- 👤 Pratt E Tracy
- 👤 Dewey M Dow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:17
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/06; A47L9/066
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) | 1937-08-06 | 1938-02-05 | 1938-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-08-06 | 1942-02-05 | 1942-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-08-06 | 1946-02-05 | 1946-08-07 | $7700.00 | Window Closed / Lapsed |