Patent DE2339842A1 successfully refreshed from Google Patents.
US3436056A
Expired / Lapsed
US
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Drive system for yarder used in double main line logging
Assignee: Washington Iron Works Inc
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Filing: 1967-09-07
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Granted: 1969-04-01
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Expires: 1987-09-07
Abstract
No abstract record available.
Inventors
- 👤 James R Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:27
CPC Classifications
B; B66; B66D; B66D1/00; B66D1/26; B66D2700/00; B66D2700/01; B66D2700/0125; B66D2700/0166; Y; Y10; Y10S; Y10S254/00; Y10S254/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1412956A
Cited
US2221359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |