US2869462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blasting device
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1955-04-04
•
Granted: 1959-01-20
•
Expires: 1975-04-04
Abstract
No abstract record available.
Inventors
- 👤 Davidson Samuel Henry
- 👤 Love David Auchinvole
- 👤 Williams Hugh Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:34
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/04; F42B3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732800A
Cited
US2255602A
Cited
GB654958A
Cited
US2650540A
Cited
GB689440A
Cited
US2648283A
Cited
GB724060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |