US2478322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing improved electrical conductors
Assignee: Sprague Electric Co
•
Filing: 1946-09-18
•
Granted: 1949-08-09
•
Expires: 1966-09-18
Abstract
No abstract record available.
Inventors
- 👤 Robinson Preston
- 👤 Stanley O Dorst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:11
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/4505; C04B41/46; C04B41/48; C04B41/4857; C04B41/80; C04B41/81; C04B41/82; C04B41/83; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2307018A
Cited
US2421652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-08 | 1953-02-07 | 1953-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-08 | 1957-02-07 | 1957-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-08 | 1961-02-07 | 1961-08-09 | $7700.00 | Window Closed / Lapsed |