US2749124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dueling target indicator
Assignee: Individual
•
Filing: 1953-04-06
•
Granted: 1956-06-05
•
Expires: 1973-04-06
Abstract
No abstract record available.
Inventors
- 👤 Donald F Ream
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:47
CPC Classifications
F; F41; F41J; F41J5/00; F41J5/04; F41J5/044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US474109A
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US1286491A
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US1906260A
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US2181948A
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US2185628A
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US2241135A
Cited
US2309614A
Cited
US2576960A
Cited
US2629598A
Cited
US2536744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |