US2779034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Firmness adjustment for mattresses
Assignee: Individual
•
Filing: 1954-01-26
•
Granted: 1957-01-29
•
Expires: 1974-01-26
Abstract
No abstract record available.
Inventors
- 👤 Frank D Arpin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:21
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/14; A47C27/18; A47C27/08; A47C27/081; A47C27/088; Y; Y10; Y10S; Y10S5/00; Y10S5/91; Y10S5/935; Y10S5/936
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) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |