US3042121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depth control for plows
Assignee: HOWARD W ESLIEN
•
Filing: 1955-12-15
•
Granted: 1962-07-03
•
Expires: 1975-12-15
Abstract
No abstract record available.
Inventors
- 👤 Norton O Broetzman
- 👤 August E Elfe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:30
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/02; A01B63/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US452742A
Cited
US612324A
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US2249402A
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US2393324A
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US2392006A
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US2442306A
Cited
US2545573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |