US2923920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
fitch
Assignee: —
•
Filing: —
•
Granted: 1960-02-02
•
Expires: 1977-02-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:56
CPC Classifications
H; H01; H01C; H01C8/00; H01C8/02; H01B; H01B1/00; H01B1/20; H01B1/22; H01B3/00; H01B3/002; H01B3/004; H10; H10N; H10N70/00; H10N70/011; H10N70/021; H10N70/20; H10N70/801; H10N70/881; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069; Y10T29/49082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2778762A
Cited
US2592683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |