Patent US2722028A successfully refreshed from Google Patents.
US2722028A
Expired / Lapsed
US
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Deburring machine
Assignee: AO Smith Corp
•
Filing: 1952-12-17
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Granted: 1955-11-01
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Expires: 1972-12-17
Abstract
No abstract record available.
Inventors
- 👤 Henry L Lynch
- 👤 Torsten A Rybeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:17
CPC Classifications
B; B24; B24B; B24B9/00; Y; Y10; Y10T; Y10T29/00; Y10T29/44; Y10T409/00; Y10T409/30; Y10T409/3042; Y10T409/306664
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1685613A
Cited
US940988A
Cited
US2209037A
Cited
US2271598A
Cited
US2368389A
Cited
US2579337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-31 | 1959-05-02 | 1959-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-31 | 1963-05-02 | 1963-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-31 | 1967-05-02 | 1967-11-01 | $7700.00 | Window Closed / Lapsed |