US2552999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making inductances
Assignee: Pye Electronic Products Ltd
•
Filing: 1947-11-25
•
Granted: 1951-05-15
•
Expires: 1967-11-25
Abstract
No abstract record available.
Inventors
- 👤 Pannell William Morgan
- 👤 Shilling Arthur Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:49
CPC Classifications
H; H01; H01F; H01F21/00; H01F21/02; H01F21/06; H01F21/065; H03; H03H; H03H7/00; H03H7/01; H03H7/0153; H03H7/0161; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1661953A
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US2144353A
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US2179257A
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US2343999A
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US2402903A
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US2435630A
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US2459605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |