US2550486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wave-signal transformer
Assignee: Hazeltine Research Inc
•
Filing: 1946-06-26
•
Granted: 1951-04-24
•
Expires: 1966-06-26
Abstract
No abstract record available.
Inventors
- 👤 Bernard D Loughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:03
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/0153; H03H7/0161; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/08; H03H7/17; H03H7/1741; H03H7/1766; H03H7/1775
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |