US2871280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric igniter unit for internal combustion engines
Assignee: Briggs and Stratton Corp
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Filing: 1956-08-20
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Granted: 1959-01-27
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Expires: 1976-08-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Harkness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:48
CPC Classifications
F; F23; F23Q; F23Q3/00; F23Q3/002; F02; F02P; F02P3/00; F02P3/12; F23Q2/00; F23Q2/28; F23Q2/285; F23Q2/287
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) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |