Patent US2694274A successfully refreshed from Google Patents.
US2694274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush type polishing machine
Assignee: Lukens Steel Co
•
Filing: 1952-08-14
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Granted: 1954-11-16
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Expires: 1972-08-14
Abstract
No abstract record available.
Inventors
- 👤 Archie S Mcgibbon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:28
CPC Classifications
B; B24; B24B; B24B29/00; B24B29/005; B24B7/00; B24B7/20; B24B7/22; B24B7/224
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) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |