US2644447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Posture correcting machine
Assignee: Individual
•
Filing: 1949-01-28
•
Granted: 1953-07-07
•
Expires: 1969-01-28
Abstract
No abstract record available.
Inventors
- 👤 Helen E Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:39
CPC Classifications
A; A61; A61H; A61H1/00; A61H1/001; A47; A47C; A47C1/00; A61H2201/00; A61H2201/01; A61H2201/0119; A61H2201/0138; A61H2201/0149
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US117580A
Cited
US122500A
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US1953424A
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US1984397A
Cited
US2062299A
Cited
US2284061A
Cited
US2427053A
Cited
US2497751A
Cited
US2550841A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |