US3531133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal
Assignee: RES ENG CO
•
Filing: 1968-11-08
•
Granted: 1970-09-29
•
Expires: 1988-11-08
Abstract
No abstract record available.
Inventors
- 👤 John M Sheesley
- 👤 Ronald A Gulick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:12
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/16; F16L23/18; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/12; F16J15/121; F16J15/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA687391A
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US368189A
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US2196953A
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GB547066A
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US2599767A
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US2442312A
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GB836584A
Cited
US3078110A
Cited
GB937707A
Cited
FR1290961A
Cited
US3195906A
Cited
US3167322A
Cited
US3153541A
Cited
US3279805A
Cited
US3248119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |