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US2876481A
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Suction cleaners
Assignee: Hoover Co
•
Filing: 1955-03-09
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Granted: 1959-03-10
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Expires: 1975-03-09
Abstract
No abstract record available.
Inventors
- 👤 Dale C Gerber
- 👤 Werner G Seck
- 👤 Dale T Kurlinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:28
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/32; A47L9/00; A47L9/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US427607A
Cited
US2266075A
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US2237830A
Cited
US2175647A
Cited
CH213420A
Cited
US2396059A
Cited
US2566030A
Cited
US2739616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |