US2874681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic follow-up control for bulldozers and the like
Assignee: New York Air Brake LLC
•
Filing: 1955-04-29
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Granted: 1959-02-24
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Expires: 1975-04-29
Abstract
No abstract record available.
Inventors
- 👤 Kaay Henry A Vander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:00
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/80; E02F3/84; E02F3/844; F; F15; F15B; F15B9/00; F15B9/02; F15B9/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2221150A
Cited
US2451013A
Cited
US2608954A
Cited
US2575507A
Cited
US2679234A
Cited
US2755624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |