Patent US3399378A successfully refreshed from Google Patents.
US3399378A
Expired / Lapsed
US
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System for signalling between earthmoving vehicles
Assignee: Caterpillar Inc
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Filing: 1965-03-31
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Granted: 1968-08-27
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Expires: 1985-03-31
Abstract
No abstract record available.
Inventors
- 👤 John W Carter
- 👤 Ernest W Landen
- 👤 Robert G Miller
- 👤 Robert C Strodel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:25
CPC Classifications
G; G08; G08B; G08B1/00; G08B1/08; E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/6454; E02F3/65; E02F3/651
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |