Patent US2428303A successfully refreshed from Google Patents.
US2428303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction heating means for gear teeth
Assignee: Ohio Crankshaft Co
•
Filing: 1943-02-24
•
Granted: 1947-09-30
•
Expires: 1963-02-24
Abstract
No abstract record available.
Inventors
- 👤 Alden O Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:25
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/36; H05B6/40; H05B6/405
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2052010A
Cited
GB467882A
Cited
US2144377A
Cited
US2282322A
Cited
US2290338A
Cited
US2356150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-29 | 1951-03-31 | 1951-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-29 | 1955-03-31 | 1955-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-29 | 1959-03-31 | 1959-09-30 | $7700.00 | Window Closed / Lapsed |