US2932289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precombustion chamber
Assignee: Individual
•
Filing: 1958-10-20
•
Granted: 1960-04-12
•
Expires: 1978-10-20
Abstract
No abstract record available.
Inventors
- 👤 Julius E Witzky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:45
CPC Classifications
F; F02; F02B; F02B23/00; F02B23/02; F02B23/04; F02B19/00; F02B19/14; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |