Patent US3172255A successfully refreshed from Google Patents.
US3172255A
Expired / Lapsed
US
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Ignition device
Assignee: RTX Corp
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Filing: 1961-09-26
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Granted: 1965-03-09
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Expires: 1981-09-26
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Priapi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:48
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/95
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) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |