Patent US3973828A successfully refreshed from Google Patents.
US970781A
Expired / Lapsed
US
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Appliance for treatment of spinal affections.
Assignee: Individual
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Filing: 1909-11-01
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Granted: 1910-09-20
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Expires: 1929-11-01
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Battershall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:00
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)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1913-09-19 | 1914-03-21 | 1914-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-09-19 | 1918-03-21 | 1918-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-09-19 | 1922-03-21 | 1922-09-20 | $7700.00 | Window Closed / Lapsed |