Patent US3000040A successfully refreshed from Google Patents.
US3000040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning device
Assignee: Individual
•
Filing: 1955-11-03
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Granted: 1961-09-19
•
Expires: 1975-11-03
Abstract
No abstract record available.
Inventors
- 👤 Carlson Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:04
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/20; A47L13/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US409770A
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US641867A
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US656301A
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US947347A
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US1190279A
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US1227927A
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US1405142A
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US2238175A
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US2310006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |