US3043997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surge protected transistor operated servo system
Assignee: Potter Instrument Co Inc
•
Filing: 1960-02-09
•
Granted: 1962-07-10
•
Expires: 1980-02-09
Abstract
No abstract record available.
Inventors
- 👤 Charles E Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:09
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/52; G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1418; G11; G11B; G11B15/00; G11B15/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2888622A
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US2837662A
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US2921247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |