US2740984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust removal system for surface treating machines
Assignee: —
•
Filing: —
•
Granted: 1956-04-10
•
Expires: 1973-04-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:15
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/02; A47L11/10; A47L11/14; A47L11/18; A47L11/40; A47L11/4013; A47L11/4036; A47L11/4044; A47L11/4052; A47L11/4055; A47L11/4063; A47L11/4069; A47L11/4075
Claims Analysis
Total Claims: 0
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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) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |