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Patent US2636291A successfully refreshed from Google Patents.
US2636291A
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Digger for endless chain-type ditching machines
Assignee: Individual
•
Filing: 1948-02-06
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Granted: 1953-04-28
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Expires: 1968-02-06
Abstract
No abstract record available.
Inventors
- 👤 Reagle Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:46
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/08; E02F3/12; E02F3/14; E02F3/142
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1308843A
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US1020296A
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US1244785A
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US1397679A
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US1481602A
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US1886382A
Cited
US1850364A
Cited
DE615492C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |