US2419033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for lapping quartz oscillator plates
Assignee: REEVES ELY LAB Inc
•
Filing: 1945-04-06
•
Granted: 1947-04-15
•
Expires: 1965-04-06
Abstract
No abstract record available.
Inventors
- 👤 Irving S Primus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:21
CPC Classifications
B; B24; B24B; B24B37/00; B24B37/04; B24B37/07; B24B37/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1610984A
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US1610527A
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DE514794C
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US1963884A
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US2375003A
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US2352105A
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US2369107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-14 | 1950-10-14 | 1951-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-14 | 1954-10-14 | 1955-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-14 | 1958-10-14 | 1959-04-15 | $7700.00 | Window Closed / Lapsed |