US2679782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuning instrument
Assignee: ROBERT GUERNER
•
Filing: 1950-07-05
•
Granted: 1954-06-01
•
Expires: 1970-07-05
Abstract
No abstract record available.
Inventors
- 👤 Robert S Ryder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:31
CPC Classifications
G; G10; G10G; G10G7/00; G10G7/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US97640A
Cited
US831685A
Cited
US1822812A
Cited
US2134298A
Cited
US2163096A
Cited
US2223489A
Cited
US2167641A
Cited
US2221523A
Cited
US2207450A
Cited
US2257285A
Cited
US2573506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |