US2909800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid and vacuum cleaning machine
Assignee: Individual
•
Filing: 1953-06-22
•
Granted: 1959-10-27
•
Expires: 1973-06-22
Abstract
No abstract record available.
Inventors
- 👤 Eugene L Grindle
- 👤 Edward G Pickels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:00
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4075; A47L11/34; A47L11/408; A47L11/4088; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE72822C
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US742880A
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US813282A
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US1363860A
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US2292435A
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FR996780A
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US2713826A
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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) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |