Patent US1929526A successfully refreshed from Google Patents.
US1929526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectifying tube with glow discharge
Assignee: Egyesuelt Izzolampa es Villamossagi Rt
•
Filing: 1930-08-25
•
Granted: 1933-10-10
•
Expires: 1950-08-25
Abstract
No abstract record available.
Inventors
- 👤 Szigeti Gyorgy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:19
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/04; H01J17/06; H01J17/066; H01J17/38; H01J2893/00; H01J2893/0064; H01J2893/0065; H01J2893/0066
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1936-10-09 | 1937-04-10 | 1937-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-10-09 | 1941-04-10 | 1941-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-10-09 | 1945-04-10 | 1945-10-10 | $7700.00 | Window Closed / Lapsed |