US2464533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive contact ignition assembly
Assignee: Individual
•
Filing: 1947-05-21
•
Granted: 1949-03-15
•
Expires: 1967-05-21
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Shearer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:26
CPC Classifications
F; F02; F02P; F02P7/00; F02P7/02; F02P7/021; F02P7/022; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10S428/9335; Y10S428/939; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1338989A
Cited
US1509224A
Cited
US1658713A
Cited
US1898064A
Cited
US2167694A
Cited
US2253221A
Cited
US2343455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |