US2558763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible member
Assignee: Individual
•
Filing: 1946-02-21
•
Granted: 1951-07-03
•
Expires: 1966-02-21
Abstract
No abstract record available.
Inventors
- 👤 Norman E Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:57
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/08; H01Q1/085; Y; Y10; Y10T; Y10T403/00; Y10T403/45; Y10T403/459
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1661835A
Cited
US1053394A
Cited
US1433537A
Cited
US1385821A
Cited
US1588900A
Cited
US1684554A
Cited
GB279399A
Cited
GB301865A
Cited
US1882943A
Cited
US2346426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |