US2908847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blasting machine
Assignee: EIDP Inc
•
Filing: 1955-08-30
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Granted: 1959-10-13
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Expires: 1975-08-30
Abstract
No abstract record available.
Inventors
- 👤 Bickel Ferdinand De Witt
- 👤 Charles P Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:09
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/28; F; F42; F42B; F42B3/00; F42B3/10; F42D; F42D1/00; F42D1/04; F42D1/045; F42D1/05
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) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |