Patent US2800310A successfully refreshed from Google Patents.
US2800310A
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US
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Assignee: Hoover Co
•
Filing: 1955-02-21
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Granted: 1957-07-23
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Expires: 1975-02-21
Abstract
No abstract record available.
Inventors
- 👤 Eugene L Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:43
CPC Classifications
A; A47; A47J; A47J43/00; A47J43/04; A47J43/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US640860A
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US1563413A
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US2028595A
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US2758623A
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FR1072517A
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US2720329A
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US2695115A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |