US3396852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derrick units
Assignee: MCCABE POWERS BODY Co
•
Filing: 1966-10-19
•
Granted: 1968-08-13
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Expires: 1986-10-19
Abstract
No abstract record available.
Inventors
- 👤 Roy O Balogh
- 👤 Robert G Bakula
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:27
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/54; B60P1/5404; B60P1/5423; B60P1/5433; B66; B66C; B66C13/00; B66C13/18; B66C2700/00; B66C2700/06; B66C2700/062
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) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |