US2584858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoflash ignition apparatus and method
Assignee: Union Carbide Corp
•
Filing: 1947-05-29
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Granted: 1952-02-05
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Expires: 1967-05-29
Abstract
No abstract record available.
Inventors
- 👤 William H Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:48
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04; G03B15/0452
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2469688A
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US2486010A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |