US2887754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe anchor
Assignee: MCEVOY CO
•
Filing: 1954-05-14
•
Granted: 1959-05-26
•
Expires: 1974-05-14
Abstract
No abstract record available.
Inventors
- 👤 Charles F Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:33
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/0422; Y; Y10; Y10S; Y10S285/00; Y10S285/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1909601A
Cited
US2108499A
Cited
US2155380A
Cited
US2230712A
Cited
US2312487A
Cited
US2491392A
Cited
US2609879A
Cited
US2551240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |