Patent US3137933A successfully refreshed from Google Patents.
US3137933A
Expired / Lapsed
US
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Method of repairing a seal assembly on a worn shaft
Assignee: Individual
•
Filing: 1962-01-15
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Granted: 1964-06-23
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Expires: 1982-01-15
Abstract
No abstract record available.
Inventors
- 👤 Elwyn P Hitchcock
- 👤 Claris S Persons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:55
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/002; F16J15/008; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49703; Y10T29/49718; Y10T29/49719
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |