Patent US4625160A successfully refreshed from Google Patents.
US2962946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drag broom apparatus
Assignee: Individual
•
Filing: 1956-10-24
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Granted: 1960-12-06
•
Expires: 1976-10-24
Abstract
No abstract record available.
Inventors
- 👤 Wayne W Neff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:10
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/02; E01C; E01C19/00; E01C19/12; E01C19/15
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) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |