US2996685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic tone signal generators
Assignee: Individual
•
Filing: 1958-01-31
•
Granted: 1961-08-15
•
Expires: 1978-01-31
Abstract
No abstract record available.
Inventors
- 👤 Baskin R Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:24
CPC Classifications
G; G10; G10H; G10H5/00; G10H5/02; G10H5/06; G10H3/00; G10H3/12; G10H3/14; G10H3/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1639045A
Cited
US1900038A
Cited
US1986599A
Cited
US2128367A
Cited
US2542540A
Cited
US2628343A
Cited
US2906888A
Cited
US2769926A
Cited
US2777950A
Cited
US2856528A
Cited
US2793293A
Cited
US2802117A
Cited
US2780752A
Cited
US2763780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |