US3459136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic control for track surfacing machines
Assignee: Conquip Ltd
•
Filing: 1967-05-08
•
Granted: 1969-08-05
•
Expires: 1987-05-08
Abstract
No abstract record available.
Inventors
- 👤 Colin St John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:49
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/12; E01B27/13; E01B27/16; E01B27/17; E01B35/00; E01B2203/00; E01B2203/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3141418A
Cited
US3198135A
Cited
US3144834A
Cited
US3298105A
Cited
US3301198A
Cited
US3334593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |