US2534384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for polishing or forming facets on gems, diamonds, or the like
Assignee: Individual
•
Filing: 1946-01-25
•
Granted: 1950-12-19
•
Expires: 1966-01-25
Abstract
No abstract record available.
Inventors
- 👤 Spira Josef Hillel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:15
CPC Classifications
B; B24; B24B; B24B9/00; B24B9/02; B24B9/06; B24B9/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US616377A
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US615083A
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US1313402A
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US677166A
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US740902A
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US774383A
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US1094914A
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US1166006A
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US1103698A
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US1331480A
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US1458768A
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US2137405A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |