US2484837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light signaling means
Assignee: Individual
•
Filing: 1938-06-27
•
Granted: 1949-10-18
•
Expires: 1958-06-27
Abstract
No abstract record available.
Inventors
- 👤 Burton G Lake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:30
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB452337A
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US1345586A
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US1517332A
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FR526282A
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FR24724E
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US1654951A
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US1933856A
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US1954204A
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US2073247A
Cited
US2131328A
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US2116689A
Cited
US2201166A
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US2275745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-17 | 1953-04-18 | 1953-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-17 | 1957-04-18 | 1957-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-17 | 1961-04-18 | 1961-10-18 | $7700.00 | Window Closed / Lapsed |