US1754716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anticathode for discharge tubes
Assignee: Koninklijke Philips NV
•
Filing: 1926-03-08
•
Granted: 1930-04-15
•
Expires: 1946-03-08
Abstract
No abstract record available.
Inventors
- 👤 Holst Gilles
- 👤 Jonas Gottfried Bruno
- 👤 Bouwers Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:34
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/02; H01J5/04; H01J19/00; H01J19/28; H01J19/30; H01J35/00; H01J35/02; H01J35/04; H01J35/08; H01J35/12; H01J5/32; H01J5/40; H01J5/42; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0013; H01J2893/0019; H01J2893/002; H01J2893/0033; H01J2893/0034
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) | 1933-04-14 | 1933-10-14 | 1934-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-04-14 | 1937-10-14 | 1938-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-04-14 | 1941-10-14 | 1942-04-15 | $7700.00 | Window Closed / Lapsed |