US2465864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic carbonization of filaments
Assignee: Westinghouse Electric Corp
•
Filing: 1943-06-22
•
Granted: 1949-03-29
•
Expires: 1963-06-22
Abstract
No abstract record available.
Inventors
- 👤 George A Freeman
- 👤 James H Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:24
CPC Classifications
G; G05; G05F; G05F1/00; C; C23; C23C; C23C16/00; C23C16/44; C23C16/52; G05B; G05B11/00; G05B11/01; G05B11/012; G05B11/013; Y; Y10; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US390310A
Cited
US1367124A
Cited
US1529597A
Cited
US1626685A
Cited
US1760155A
Cited
US1668711A
Cited
US1710755A
Cited
US1880937A
Cited
US1776151A
Cited
US1878458A
Cited
GB375071A
Cited
US2095105A
Cited
US2276822A
Cited
US2311118A
Cited
US2319413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |