Patent US2489764A successfully refreshed from Google Patents.
US2489764A
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US
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Machine for setting pronged beads
Assignee: Individual
•
Filing: 1947-03-14
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Granted: 1949-11-29
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Expires: 1967-03-14
Abstract
No abstract record available.
Inventors
- 👤 Effgen Anton
- 👤 Effgen Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:09
CPC Classifications
B; B27; B27F; B27F7/00; B27F7/17; B27F7/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US453176A
Cited
US477117A
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US1503494A
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US628098A
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US746967A
Cited
GB190318109A
Cited
US2228478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |