US2506604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making electronic coils
Assignee: Individual
•
Filing: 1947-02-01
•
Granted: 1950-05-09
•
Expires: 1967-02-01
Abstract
No abstract record available.
Inventors
- 👤 Robert P Lokker
- 👤 Verano Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:45
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/041; H01F41/043; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49117; Y10T29/49124; Y10T29/49155
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1582683A
Cited
US1857929A
Cited
US2166367A
Cited
US2179257A
Cited
US2428043A
Cited
US2441960A
Cited
US2401472A
Cited
US2432800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-08 | 1953-11-07 | 1954-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-08 | 1957-11-07 | 1958-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-08 | 1961-11-07 | 1962-05-09 | $7700.00 | Window Closed / Lapsed |