Patent US2819569A successfully refreshed from Google Patents.
US2819569A
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Automatic abrasive liquid distributing device for optical lens polishing machines
Assignee: Pierre Angenieux SA
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Filing: 1955-02-24
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Granted: 1958-01-14
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Expires: 1975-02-24
Abstract
No abstract record available.
Inventors
- 👤 Angenieux Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:28
CPC Classifications
B; B24; B24B; B24B57/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1409888A
Cited
US1513813A
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GB215661A
Cited
US1619344A
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US1625197A
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US1620021A
Cited
US1800743A
Cited
US2069261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |