US3508077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for electronic feeding-in reporting pulses indicating the contact position of switches in telecontrol systems
Assignee: International Standard Electric Corp
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Filing: 1967-07-05
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Granted: 1970-04-21
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Expires: 1987-07-05
Abstract
No abstract record available.
Inventors
- 👤 Gustav Trautwein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:44
CPC Classifications
G; G08; G08B; G08B21/00; G08C; G08C19/00; G08C19/16; H; H04; H04Q; H04Q9/00; H04Q9/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3018442A
Cited
US3062973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |