Patent US2521527A successfully refreshed from Google Patents.
US2521527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Invalid's high chair
Assignee: Individual
•
Filing: 1945-07-09
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Granted: 1950-09-05
•
Expires: 1965-07-09
Abstract
No abstract record available.
Inventors
- 👤 Marder Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:07
CPC Classifications
A; A47; A47D; A47D1/00; A47D1/008; A61; A61G; A61G5/00; A61G5/10; A61G5/1094
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US452168A
Cited
US817816A
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US1082854A
Cited
US1330373A
Cited
US2146191A
Cited
US2320595A
Cited
US2377649A
Cited
US2383039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |