US3063760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill stem protector
Assignee: Plastic Applicators Inc
•
Filing: 1959-06-22
•
Granted: 1962-11-13
•
Expires: 1979-06-22
Abstract
No abstract record available.
Inventors
- 👤 Bruce M Gifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:41
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/10; E21B17/1042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US339036A
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US1535336A
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GB306760A
Cited
US1863823A
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US1854339A
Cited
US2682490A
Cited
US2467388A
Cited
US2575558A
Cited
US2657956A
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US2818517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |