Patent US3434376A successfully refreshed from Google Patents.
US3434376A
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US
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Assignee: Erickson Tool Co
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Filing: 1967-04-03
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Granted: 1969-03-25
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Expires: 1987-04-03
Abstract
No abstract record available.
Inventors
- 👤 Milton L Benjamin
- 👤 David D Walker
- 👤 Wilbur N Miles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:10
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/03; B23B29/034; B23B29/03403; B23B29/03407; B23B29/0341; Y; Y10; Y10T; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/858
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |