US2232083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing surfaces of high heat radiation
Assignee: Alcatel Lucent Deutschland AG
•
Filing: 1938-08-24
•
Granted: 1941-02-18
•
Expires: 1958-08-24
Abstract
No abstract record available.
Inventors
- 👤 Strohfeldt Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:25
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/88; H01J19/00; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0019; H01J2893/0022; H01J2893/0023
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) | 1944-02-18 | 1944-08-19 | 1945-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-18 | 1948-08-19 | 1949-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-18 | 1952-08-19 | 1953-02-18 | $7700.00 | Window Closed / Lapsed |