Patent US3448485A successfully refreshed from Google Patents.
US3448485A
Expired / Lapsed
US
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Sweeper
Assignee: Mauz and Pfeiffer GmbH and Co KG
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Filing: 1966-01-19
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Granted: 1969-06-10
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Expires: 1986-01-19
Abstract
No abstract record available.
Inventors
- 👤 Eberhard Worwag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:44
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4075; A47L11/02; A47L11/20; A47L11/32; A47L11/33; A47L11/4002; A47L11/4005; A47L11/4036; A47L11/4041; A47L11/4052; A47L11/4055; A47L11/4063; A47L11/4069; A47L7/00; A47L7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |