US3044135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking pipe holder
Assignee: Individual
•
Filing: 1960-11-03
•
Granted: 1962-07-17
•
Expires: 1980-11-03
Abstract
No abstract record available.
Inventors
- 👤 Roy F Wilcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:28
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US201591A
Cited
US480904A
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US540262A
Cited
US649916A
Cited
US1917377A
Cited
US2093210A
Cited
GB518793A
Cited
US2574281A
Cited
DE822525C
Cited
US2650787A
Cited
US2926387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-16 | 1966-01-15 | 1966-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-16 | 1970-01-15 | 1970-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-16 | 1974-01-15 | 1974-07-17 | $7700.00 | Window Closed / Lapsed |