Patent US2767413A successfully refreshed from Google Patents.
US2767413A
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Apparatus for removing scale from a metallic surface
Assignee: Fuller Brush Co Inc
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Filing: 1952-03-27
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Granted: 1956-10-23
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Expires: 1972-03-27
Abstract
No abstract record available.
Inventors
- 👤 Warren G Herrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:46
CPC Classifications
B; B24; B24B; B24B7/00; B24B7/10; B24B7/12; B24B7/13; Y; Y10; Y10T; Y10T29/00; Y10T29/45; Y10T29/4567
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1860132A
Cited
US1889838A
Cited
GB374516A
Cited
US2218913A
Cited
US2359088A
Cited
US2403341A
Cited
US2641008A
Cited
US2617223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |