US2702885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supersonic delay line
Assignee: Individual
•
Filing: 1946-04-17
•
Granted: 1955-02-22
•
Expires: 1966-04-17
Abstract
No abstract record available.
Inventors
- 👤 Shapiro Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:31
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/30; H03H9/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1799634A
Cited
US1852795A
Cited
FR711667A
Cited
US1955471A
Cited
US2371613A
Cited
US2375004A
Cited
US2421026A
Cited
US2514080A
Cited
US2418964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-21 | 1958-08-23 | 1959-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-21 | 1962-08-23 | 1963-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-21 | 1966-08-23 | 1967-02-22 | $7700.00 | Window Closed / Lapsed |