US3428307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable couches
Assignee: Philips North America LLC
•
Filing: 1965-10-20
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Granted: 1969-02-18
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Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 Henry Douglas Hunter
- 👤 Alfred Kennedy Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:13
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/04; A47; A47B; A47B1/00; A47B1/02; A47B11/00; A47B9/00; A47B9/04; A61G; A61G13/00; A61G13/02; A61G13/08
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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |