Patent US2209221A successfully refreshed from Google Patents.
US2575113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Igniter
Assignee: —
•
Filing: —
•
Granted: 1951-11-13
•
Expires: 1968-11-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:13
CPC Classifications
F; F23; F23Q; F23Q7/00; F23Q7/22; F23Q7/001; F23Q7/06; H; H05; H05B; H05B2203/00; H05B2203/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1400410A
Cited
US1393325A
Cited
US1359400A
Cited
US1954832A
Cited
US2005832A
Cited
US2375058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |