Patent US2944538A successfully refreshed from Google Patents.
US2944538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubrication system for chain saws
Assignee: Magnaflux Corp
•
Filing: 1956-10-18
•
Granted: 1960-07-12
•
Expires: 1976-10-18
Abstract
No abstract record available.
Inventors
- 👤 Edward F Conway
- 👤 Ruben W Puta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:24
CPC Classifications
B; B27; B27B; B27B17/00; B27B17/12; Y; Y10; Y10T; Y10T83/00; Y10T83/263
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1024862A
Cited
US1574410A
Cited
US2109702A
Cited
US2391730A
Cited
US2650626A
Cited
US2605787A
Cited
FR1047905A
Cited
US2741275A
Cited
US2688989A
Cited
US2748810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |