US2883740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool for removal of valve lifters
Assignee: Individual
•
Filing: 1954-08-05
•
Granted: 1959-04-28
•
Expires: 1974-08-05
Abstract
No abstract record available.
Inventors
- 👤 William F Derby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:43
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/02; B25B27/06; B25B27/062; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53552; Y10T29/53796; Y10T29/53848; Y10T29/53857; Y10T29/53878
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191401830A
Cited
US1241819A
Cited
US1521008A
Cited
US1587153A
Cited
US2031998A
Cited
US2215015A
Cited
US2609597A
Cited
US2671263A
Cited
US2719747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |