US2818585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head support with pivoted backrest
Assignee: Individual
•
Filing: 1955-12-28
•
Granted: 1958-01-07
•
Expires: 1975-12-28
Abstract
No abstract record available.
Inventors
- 👤 Campbell Ellen Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:59
CPC Classifications
A; A45; A45D; A45D19/00; A45D19/04; Y; Y10; Y10S; Y10S5/00; Y10S5/928
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US973822A
Cited
US1660107A
Cited
US2167572A
Cited
US2425513A
Cited
US2453784A
Cited
US2759195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |