US2622164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sequence relay
Assignee: John B. Pierce Laboratory
•
Filing: 1950-06-17
•
Granted: 1952-12-16
•
Expires: 1970-06-17
Abstract
No abstract record available.
Inventors
- 👤 John B Cataldo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:15
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/02; H01H51/04; H01H51/06; H01H51/08; H01H51/082; H01H51/086; H01H51/088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US745899A
Cited
FR437328A
Cited
GB191214270A
Cited
US1176984A
Cited
US1192531A
Cited
US1658511A
Cited
US1966285A
Cited
US2335082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |