Patent US2320476A successfully refreshed from Google Patents.
US2081652A
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Synchronizing and speed control system and mechanism
Assignee: EAGLE SIGNAI Corp
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Filing: 1935-11-14
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Granted: 1937-05-25
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Expires: 1955-11-14
Abstract
No abstract record available.
Inventors
- 👤 Turner Harrison Irving
- 👤 Anderson Carl Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:05
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/07; G08G1/081; G08G1/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-05-24 | 1940-11-23 | 1941-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-05-24 | 1944-11-23 | 1945-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-05-24 | 1948-11-23 | 1949-05-25 | $7700.00 | Window Closed / Lapsed |