US2589571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Key jack
Assignee: Individual
•
Filing: 1946-02-09
•
Granted: 1952-03-18
•
Expires: 1966-02-09
Abstract
No abstract record available.
Inventors
- 👤 Harold E Queen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:46
CPC Classifications
A; A45; A45C; A45C11/00; A45C11/32; A45C11/324; Y; Y10; Y10T; Y10T70/00; Y10T70/80; Y10T70/8432; Y10T70/8676
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US690396A
Cited
US1623224A
Cited
US1642791A
Cited
US1649402A
Cited
US1777929A
Cited
US1800843A
Cited
US1934889A
Cited
US2279449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |