Patent DE478672C successfully refreshed from Google Patents.
Patent US2606475A successfully refreshed from Google Patents.
US2606475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically ignited match head and the method for making the same
Assignee: Cardox Corp
•
Filing: 1946-06-27
•
Granted: 1952-08-12
•
Expires: 1966-06-27
Abstract
No abstract record available.
Inventors
- 👤 Walter F Mitcheltree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:39
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/195; F42B3/198; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US512464A
Cited
US665989A
Cited
DE568831C
Cited
GB523217A
Cited
US2212474A
Cited
US2212118A
Cited
US2260558A
Cited
US2204994A
Cited
US2431871A
Cited
US2429490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |