US3422447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seismic wave generator with venting valve
Assignee: Sinclair Research Inc
•
Filing: 1966-05-17
•
Granted: 1969-01-14
•
Expires: 1986-05-17
Abstract
No abstract record available.
Inventors
- 👤 Lauren G Kilmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:42
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/02; G01V1/104; G01V1/108; G01V1/112
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US488309A
Cited
US2882922A
Cited
US3198282A
Cited
US3189040A
Cited
US3260327A
Cited
US3314497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |