US2773669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for placing seismic explosive charges
Assignee: Individual
•
Filing: 1953-10-29
•
Granted: 1956-12-11
•
Expires: 1973-10-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Joe Norman
- 👤 A B Hamil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:56
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/007; F; F42; F42D; F42D1/00; F42D1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2614804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |