US2358211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming resistors and the like
Assignee: AT&T Inc
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Filing: 1942-10-22
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Granted: 1944-09-12
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Expires: 1962-10-22
Abstract
No abstract record available.
Inventors
- 👤 Carl J Christensen
- 👤 Christensen Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:15
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1315; H; H01; H01B; H01B1/00; H01B1/06; H01B1/08; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/447; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06573; H01C17/06586; H01C17/30; H01C7/00; H01C7/001; H01C7/04; H01C7/042; H01C7/043
Claims Analysis
Total Claims: 0
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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) | 1947-09-12 | 1948-03-13 | 1948-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-09-12 | 1952-03-13 | 1952-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-09-12 | 1956-03-13 | 1956-09-12 | $7700.00 | Window Closed / Lapsed |