US3436121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically actuated demolition device
Assignee: Individual
•
Filing: 1967-05-02
•
Granted: 1969-04-01
•
Expires: 1987-05-02
Abstract
No abstract record available.
Inventors
- 👤 Wesley B Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:48
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/96; E02F3/966; E01; E01C; E01C23/00; E01C23/06; E01C23/12; E01C23/122; E01C23/124; E04; E04G; E04G23/00; E04G23/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |