US2445640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoke, signal, or illuminating flare
Assignee: Individual
•
Filing: 1944-06-13
•
Granted: 1948-07-20
•
Expires: 1964-06-13
Abstract
No abstract record available.
Inventors
- 👤 Schermuly Conrad David
- 👤 Schermuly Alfred James
- 👤 Schermuly Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:17
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/36; F42B12/56; F42B12/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US24468A
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US376375A
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FR465867A
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US1299217A
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FR502678A
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US1567267A
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DE474163C
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US2035185A
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DE611843C
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US2344957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-20 | 1952-01-19 | 1952-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-20 | 1956-01-19 | 1956-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-20 | 1960-01-19 | 1960-07-20 | $7700.00 | Window Closed / Lapsed |