US2919748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable high-chair attachment for chairs
Assignee: Individual
•
Filing: 1957-11-18
•
Granted: 1960-01-05
•
Expires: 1977-11-18
Abstract
No abstract record available.
Inventors
- 👤 Sr John Alden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:08
CPC Classifications
A; A47; A47D; A47D11/00; A47D11/02; A47D1/00; A47D1/008; A47D1/0085; A47D1/10; A47D1/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1288170A
Cited
US1680794A
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US2229411A
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US2332582A
Cited
US2414698A
Cited
US2496205A
Cited
US2633899A
Cited
US2667207A
Cited
US2728374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |