US2850686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic coupling devices
Assignee: AUTOMATIC TIMING CONTROLS Inc
•
Filing: 1954-03-30
•
Granted: 1958-09-02
•
Expires: 1974-03-30
Abstract
No abstract record available.
Inventors
- 👤 William D Macgeorge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:08
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/02; G01D5/06; G01F; G01F23/00; G01F23/30; G01F23/56; G01F23/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US700812A
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US1029388A
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US1668457A
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US2539833A
Cited
US2614163A
Cited
US2632330A
Cited
US2634747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |