Patent US3510076A successfully refreshed from Google Patents.
US3510076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact device
Assignee: Esco Corp
•
Filing: 1969-05-23
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Granted: 1970-05-05
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Expires: 1989-05-23
Abstract
No abstract record available.
Inventors
- 👤 Benton L Perdue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:30
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/26; B02C13/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1476177A
Cited
US2531597A
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US2566758A
Cited
US2927739A
Cited
US2874912A
Cited
US2994486A
Cited
US3367585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |