US2102221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner
Assignee: Air Way Electric Appliance Corp
•
Filing: 1934-11-09
•
Granted: 1937-12-14
•
Expires: 1954-11-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick Riebel
- 👤 Dewey M Dow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:21
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/24; A47L5/26; A47L5/28; A47L5/30
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) | 1940-12-13 | 1941-06-14 | 1941-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-12-13 | 1945-06-14 | 1945-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-12-13 | 1949-06-14 | 1949-12-14 | $7700.00 | Window Closed / Lapsed |