US2801437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor maintenance machine with suction
Assignee: ATLAS FLOOR SURFACING MACHINERY CORP
•
Filing: 1954-04-27
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Granted: 1957-08-06
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Expires: 1974-04-27
Abstract
No abstract record available.
Inventors
- 👤 Nathaniel N Okun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:48
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4013; A47L11/02; A47L11/20; A47L11/202; A47L11/2025; A47L11/4036; A47L11/4044; A47L11/4063; A47L11/4069; A47L11/4075; A47L11/4077
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1156235A
Cited
US1209722A
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FR566526A
Cited
US1536615A
Cited
US1849663A
Cited
US2287515A
Cited
US2177969A
Cited
US2210950A
Cited
DE896548C
Cited
DK46588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |