US2879536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for cleaning floors in textile mills
Assignee: Denning Co Inc
•
Filing: 1954-11-12
•
Granted: 1959-03-31
•
Expires: 1974-11-12
Abstract
No abstract record available.
Inventors
- 👤 Wade F Denning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:45
CPC Classifications
D; D01; D01H; D01H11/00; D01H11/005; D01H11/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1630972A
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US2011763A
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US1982997A
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US2128207A
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US2598499A
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US2676352A
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US2516475A
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US2675273A
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GB685429A
Cited
US2677629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |