US2602153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic frequency divider
Assignee: Automatic Electric Laboratories Inc
•
Filing: 1950-06-21
•
Granted: 1952-07-01
•
Expires: 1970-06-21
Abstract
No abstract record available.
Inventors
- 👤 Harold J Mccreary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:13
CPC Classifications
H; H03; H03B; H03B19/00; H03B19/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1862211A
Cited
US2324634A
Cited
US2445857A
Cited
US2461992A
Cited
US2468878A
Cited
US2455078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |