Patent US2431518A successfully refreshed from Google Patents.
US2431518A
Expired / Lapsed
US
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Waterproof flashlight
Assignee: STANDARD MOLDING Corp
•
Filing: 1944-07-17
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Granted: 1947-11-25
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Expires: 1964-07-17
Abstract
No abstract record available.
Inventors
- 👤 Robert G Stigler
- 👤 Edward L Baxter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:57
CPC Classifications
F; F21; F21L; F21L4/00; F21V; F21V23/00; F21V23/04; F21V23/0414
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1913946A
Cited
GB418471A
Cited
US2234972A
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US2176301A
Cited
US2259106A
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US2309402A
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US2329790A
Cited
US2381520A
Cited
US2355247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-24 | 1951-05-26 | 1951-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-24 | 1955-05-26 | 1955-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-24 | 1959-05-26 | 1959-11-25 | $7700.00 | Window Closed / Lapsed |