US2678462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power sweeper provided with dust preventing means
Assignee: WILSHIRE POWER SWEEPER Co
•
Filing: 1949-05-21
•
Granted: 1954-05-18
•
Expires: 1969-05-21
Abstract
No abstract record available.
Inventors
- 👤 Robert J Lison
- 👤 John L Newport
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:23
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/08; E01H1/0827; E01H1/0854; E01H1/02; E01H1/04; E01H1/045
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) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |