US2814064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-chattering air supported cleaner
Assignee: Hoover Co
•
Filing: 1954-10-08
•
Granted: 1957-11-26
•
Expires: 1974-10-08
Abstract
No abstract record available.
Inventors
- 👤 John C Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:58
CPC Classifications
A; A47; A47L; A47L7/00; A47L7/04; A47L7/06; A47L5/00; A47L5/12; A47L5/22; A47L5/36; A47L5/365; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE524095C
Cited
US978916A
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US1083408A
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FR571465A
Cited
GB279858A
Cited
US2332208A
Cited
US2439182A
Cited
US2652902A
Cited
US2743787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |