US2770924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instant stop and start blasting device
Assignee: Individual
•
Filing: 1954-04-01
•
Granted: 1956-11-20
•
Expires: 1974-04-01
Abstract
No abstract record available.
Inventors
- 👤 William H Mead
- 👤 Arthur A Zambruno
- 👤 Alexander L Jett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:53
CPC Classifications
B; B24; B24C; B24C3/00; B24C3/02; B24C3/06; B24C3/062; B24C3/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR614087A
Cited
US2365250A
Cited
US2455514A
Cited
US2503743A
Cited
US2483176A
Cited
US2521931A
Cited
US2494773A
Cited
US2597434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |