Patent US2550492A successfully refreshed from Google Patents.
US2829229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective device
Assignee: Timken Co
•
Filing: 1952-07-03
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Granted: 1958-04-01
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Expires: 1972-07-03
Abstract
No abstract record available.
Inventors
- 👤 Ralph H Metz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:08
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/06
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |