US2546686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blasting device
Assignee: EIDP Inc
•
Filing: 1947-03-21
•
Granted: 1951-03-27
•
Expires: 1967-03-21
Abstract
No abstract record available.
Inventors
- 👤 Bickel Ferdinand De Witt
- 👤 Earich Robert Allen George
- 👤 Lewis Harold Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:17
CPC Classifications
F; F42; F42D; F42D1/00; F42D1/04; F42D1/045; F42D1/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1195781A
Cited
US808275A
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US1078463A
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US1251820A
Cited
US1766524A
Cited
GB313951A
Cited
US2141898A
Cited
US2309686A
Cited
US2475875A
Cited
US2428334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-26 | 1954-09-25 | 1955-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-26 | 1958-09-25 | 1959-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-26 | 1962-09-25 | 1963-03-27 | $7700.00 | Window Closed / Lapsed |