Patent US2612940A successfully refreshed from Google Patents.
US2612940A
Expired / Lapsed
US
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Medical practice chair with adjustable leg and footrest supports
Assignee: Ritter Co Inc
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Filing: 1949-10-01
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Granted: 1952-10-07
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Expires: 1969-10-01
Abstract
No abstract record available.
Inventors
- 👤 Norman E Lauterbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:54
CPC Classifications
A; A61; A61G; A61G15/00; A61G15/10; A61G15/02
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |