Patent US2564861A successfully refreshed from Google Patents.
US3373424A
Expired / Lapsed
US
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Tracking and synchronizing system
Assignee: International Standard Electric Corp
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Filing: 1966-04-29
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Granted: 1968-03-12
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Expires: 1986-04-29
Abstract
No abstract record available.
Inventors
- 👤 Thyssens Leo Maria Hendrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:08
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/003; G01S13/02; G01S13/50; G01S13/58; G01S13/589; G01S13/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2952846A
Cited
US3140487A
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US3246328A
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US3308380A
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US3226713A
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US3242487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |