US3516724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colored readout assembly
Assignee: Cooper Industries LLC
•
Filing: 1967-03-13
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Granted: 1970-06-23
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Expires: 1987-03-13
Abstract
No abstract record available.
Inventors
- 👤 Donald M Ashton Jr
- 👤 Richard Du Bois Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:59
CPC Classifications
G; G09; G09F; G09F9/00; G09F9/30; G09F9/305; G09F9/302; G09F9/3023; G02; G02B; G02B6/00; G02B6/0001; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |