US2445472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support and traction of implements
Assignee: Individual
•
Filing: 1944-08-24
•
Granted: 1948-07-20
•
Expires: 1964-08-24
Abstract
No abstract record available.
Inventors
- 👤 Adam F Butch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:26
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7604
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
SE102263C1
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US1432377A
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US1546019A
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US1883403A
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US1775314A
Cited
US1918169A
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Cited
US2244559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-20 | 1952-01-19 | 1952-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-20 | 1956-01-19 | 1956-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-20 | 1960-01-19 | 1960-07-20 | $7700.00 | Window Closed / Lapsed |