Patent US2211934A successfully refreshed from Google Patents.
US2211934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner
Assignee: Individual
•
Filing: 1939-01-03
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Granted: 1940-08-20
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Expires: 1959-01-03
Abstract
No abstract record available.
Inventors
- 👤 Harley J Mcallister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:10
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/102; A47L9/106; A47L9/108; A47L9/14; A47L9/1409; A47L9/20
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) | 1943-08-20 | 1944-02-19 | 1944-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-08-20 | 1948-02-19 | 1948-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-08-20 | 1952-02-19 | 1952-08-20 | $7700.00 | Window Closed / Lapsed |