Patent US3052236A successfully refreshed from Google Patents.
US3052236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinal column supporter
Assignee: Individual
•
Filing: 1959-07-23
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Granted: 1962-09-04
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Expires: 1979-07-23
Abstract
No abstract record available.
Inventors
- 👤 Herbert S Schrieber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:19
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/01; A61F5/02; A61F5/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1526795A
Cited
FR570675A
Cited
US1646590A
Cited
US1974283A
Cited
US2104699A
Cited
US2117309A
Cited
US2240308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |