Patent US3432684A successfully refreshed from Google Patents.
US3432684A
Expired / Lapsed
US
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Scr ring counter having switching means to selectively eliminate stage from counting sequence
Assignee: Phillips Petroleum Co
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Filing: 1967-02-13
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Granted: 1969-03-11
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Expires: 1987-02-13
Abstract
No abstract record available.
Inventors
- 👤 Richard W Michael
- 👤 Grady T Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:31
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/64; H03K23/66; G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/07; G05B2219/00; G05B2219/20; G05B2219/25; G05B2219/25381; G05B2219/25382
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) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |