US3497138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interrogator-encoder mechanism
Assignee: UNITED SYSTEMS CORP
•
Filing: 1965-09-27
•
Granted: 1970-02-24
•
Expires: 1985-09-27
Abstract
No abstract record available.
Inventors
- 👤 Bernard Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:53
CPC Classifications
G; G06; G06M; G06M1/00; G06M1/27; G06M1/276; H; H03; H03M; H03M1/00; H03M1/12; H03M1/22; H03M1/24; H03M1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2894683A
Cited
US2302769A
Cited
US2895121A
Cited
GB838970A
Cited
US3045903A
Cited
US3147630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |