US2923014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mattress assembly
Assignee: Individual
•
Filing: 1957-02-08
•
Granted: 1960-02-02
•
Expires: 1977-02-08
Abstract
No abstract record available.
Inventors
- 👤 Gertrude B Hume
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:51
CPC Classifications
A; A47; A47C; A47C21/00; A47C21/02; A47C21/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US836326A
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US1528066A
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US1836302A
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US1742064A
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US1841410A
Cited
US2188576A
Cited
US2373071A
Cited
US2450923A
Cited
US2569627A
Cited
US2516363A
Cited
US2817391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |