US2463328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System of wave trains
Assignee: Hughes Henry and Son Ltd
•
Filing: 1945-07-06
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Granted: 1949-03-01
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Expires: 1965-07-06
Abstract
No abstract record available.
Inventors
- 👤 Sproule Donald Orr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:42
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H03K5/04; H03K5/06; H03K5/065; G; G01; G01S; G01S1/00; G01S1/02; G01S1/72; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/26; G01S13/28; G01S15/00; G01S15/02; G01S15/06; G01S15/08; G01S15/10; G01S15/102; G01S15/104; G01S15/32; G01S15/34; G01S7/00; G01S7/02; G01S7/28; G01S7/282; H03H; H03H9/00; H03H9/30; H03H9/46
Claims Analysis
Total Claims: 0
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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) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |