US774759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable high-frequency device and vacuum-tube stand.
Assignee: Individual
•
Filing: 1904-06-27
•
Granted: 1904-11-15
•
Expires: 1924-06-27
Abstract
No abstract record available.
Inventors
- 👤 Thomas B Kinraide
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:09
CPC Classifications
H; H05; H05G; H05G1/00; H05G1/08; H05G1/10; H05G1/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1907-11-15 | 1908-05-16 | 1908-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-11-15 | 1912-05-16 | 1912-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-11-15 | 1916-05-16 | 1916-11-15 | $7700.00 | Window Closed / Lapsed |