US2764150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convex spinal frame
Assignee: DW Zimmerman Manufacturing Inc
•
Filing: 1954-06-11
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Granted: 1956-09-25
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Expires: 1974-06-11
Abstract
No abstract record available.
Inventors
- 👤 Joe J Ettinger
- 👤 Robert E Delp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:24
CPC Classifications
A; A61; A61G; A61G13/00; A61G13/10; A61G13/12; A61G13/0036; A61G13/0054; A61G13/1205; A61G13/122; A61G13/123; A61G2200/00; A61G2200/30; A61G2200/32; A61G2200/325
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1814482A
Cited
US2152734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |