US3029352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistorized counter decade
Assignee: Potter Instrument Co Inc
•
Filing: 1957-10-24
•
Granted: 1962-04-10
•
Expires: 1977-10-24
Abstract
No abstract record available.
Inventors
- 👤 Charles E Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:11
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/58; H03K23/582
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2538122A
Cited
US2584811A
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US2562591A
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US2540024A
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US2566918A
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US2671171A
Cited
US2929929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |