US3480285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical shaft seal
Assignee: Individual
•
Filing: 1967-12-12
•
Granted: 1969-11-25
•
Expires: 1987-12-12
Abstract
No abstract record available.
Inventors
- 👤 James H Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:24
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US601296A
Cited
US2294105A
Cited
US2650117A
Cited
US2722439A
Cited
US2753198A
Cited
US2984506A
Cited
US3007724A
Cited
US3122375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |