US2099566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner
Assignee: ELECTRIC VACUUM CLEANER CO
•
Filing: 1936-09-18
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Granted: 1937-11-16
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Expires: 1956-09-18
Abstract
No abstract record available.
Inventors
- 👤 Henry T Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:56
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/36; A47L5/362; A47L9/00; A47L9/22
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) | 1940-11-15 | 1941-05-17 | 1941-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-11-15 | 1945-05-17 | 1945-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-11-15 | 1949-05-17 | 1949-11-16 | $7700.00 | Window Closed / Lapsed |