Patent US3408774A successfully refreshed from Google Patents.
US3408774A
Expired / Lapsed
US
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Vibratory finishing apparatus
Assignee: Pangborn Corp
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Filing: 1965-04-05
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Granted: 1968-11-05
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Expires: 1985-04-05
Abstract
No abstract record available.
Inventors
- 👤 Engel J Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:02
CPC Classifications
B; B24; B24B; B24B31/00; B24B31/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2074633A
Cited
US2114640A
Cited
US2186164A
Cited
US3187473A
Cited
GB930163A
Cited
US3163966A
Cited
US3305977A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |