US2523987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twin bed structure
Assignee: Seng Co
•
Filing: 1945-11-16
•
Granted: 1950-09-26
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Expires: 1965-11-16
Abstract
No abstract record available.
Inventors
- 👤 Fox Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:11
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/04; A47C17/32; A47C19/00; A47C19/02; A47C19/021; A47C19/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-25 | 1954-03-27 | 1954-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-25 | 1958-03-27 | 1958-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-25 | 1962-03-27 | 1962-09-26 | $7700.00 | Window Closed / Lapsed |