US3421500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic orthopedic device
Assignee: LUDWIG A JACOBSON
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Filing: 1965-10-08
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Granted: 1969-01-14
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Expires: 1985-10-08
Abstract
No abstract record available.
Inventors
- 👤 Ludwig A Jacobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:16
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/00192; A61; A61F; A61F5/00; A61F5/01; A61F5/0102; A61F5/013; A61F5/04; A61F5/05; A61F5/055; A63B21/40; A63B21/4023; A63B21/4025; A63B23/00; A63B23/025; A63B23/035; A63B23/12; A63B23/16; B; B25; B25J; B25J9/00; B25J9/0006; A63B23/1281
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |