US2714708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delay lines
Assignee: GULTON Manufacturing CORP
•
Filing: 1950-05-12
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Granted: 1955-08-02
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Expires: 1970-05-12
Abstract
No abstract record available.
Inventors
- 👤 Glenn N Howatt
- 👤 Abraham I Dranetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:35
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/125; H03H9/30; H03H9/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1781680A
Cited
US2240293A
Cited
US2276013A
Cited
US2361998A
Cited
US2538554A
Cited
US2540412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-01 | 1959-01-31 | 1959-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-01 | 1963-01-31 | 1963-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-01 | 1967-01-31 | 1967-08-02 | $7700.00 | Window Closed / Lapsed |