US3034320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic earring construction including means to concentrate the magnetic force
Assignee: Coro Inc
•
Filing: 1960-03-21
•
Granted: 1962-05-15
•
Expires: 1980-03-21
Abstract
No abstract record available.
Inventors
- 👤 Hans J Feibelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:12
CPC Classifications
A; A44; A44C; A44C7/00; A44D; A44D2203/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2414653A
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US2510634A
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US2483031A
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US2506600A
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US2637887A
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US2698917A
Cited
US2803953A
Cited
GB736482A
Cited
US2752764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |