US2800809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction hardened crankpins
Assignee: West Bend Co
•
Filing: 1953-09-04
•
Granted: 1957-07-30
•
Expires: 1973-09-04
Abstract
No abstract record available.
Inventors
- 👤 Kenneth R Pike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:09
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/10; H05B6/101; F; F16; F16C; F16C11/00; F16C11/02; F16C3/00; F16C3/04; F16C3/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49703; Y10T74/00; Y10T74/21; Y10T74/2173; Y10T74/2174
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2145864A
Cited
US2293048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |