US2655607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric delay device employing semiconductors
Assignee: International Standard Electric Corp
•
Filing: 1949-10-20
•
Granted: 1953-10-13
•
Expires: 1969-10-20
Abstract
No abstract record available.
Inventors
- 👤 Reeves Alec Harley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:01
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/002; H03K3/00; H03K3/02; H03K3/35; H10; H10D; H10D99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2306386A
Cited
US2486391A
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US2517960A
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US2476323A
Cited
US2502488A
Cited
US2533001A
Cited
US2531076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |