US2543389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Touch tuning and dialing device
Assignee: Individual
•
Filing: 1946-10-17
•
Granted: 1951-02-27
•
Expires: 1966-10-17
Abstract
No abstract record available.
Inventors
- 👤 Gustav J Van Lennep
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:15
CPC Classifications
H; H03; H03J; H03J1/00; H03J1/02; H03J1/04; H03J1/041; Y; Y10; Y10S; Y10S116/00; Y10S116/17; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/20642
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2378156A
Cited
US1523305A
Cited
US1689405A
Cited
US1815635A
Cited
US1977397A
Cited
US2069627A
Cited
US2305132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |