US3501158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular seal
Assignee: PRECISION ENG Inc
•
Filing: 1967-07-03
•
Granted: 1970-03-17
•
Expires: 1987-07-03
Abstract
No abstract record available.
Inventors
- 👤 Cassius L Tillman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:23
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/062; F16L; F16L23/00; F16L23/16; F16L23/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US951704A
Cited
US1825962A
Cited
US2126505A
Cited
GB574154A
Cited
US2552750A
Cited
US2775471A
Cited
US3062565A
Cited
US3204971A
Cited
US3285615A
Cited
US3325176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |