Patent US3021786A successfully refreshed from Google Patents.
US3021786A
Expired / Lapsed
US
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Blasting device
Assignee: EIDP Inc
•
Filing: 1958-07-21
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Granted: 1962-02-20
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Expires: 1978-07-21
Abstract
No abstract record available.
Inventors
- 👤 Miller Ross Jay
- 👤 Noddin George Adelbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:12
CPC Classifications
C; C06; C06C; C06C5/00; C06C5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US868876A
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US882154A
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USRE20190E
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US2360698A
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US2402235A
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US2424374A
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US2475875A
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US2619035A
Cited
GB747878A
Cited
US2796834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |