US3424386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sand blasting apparatus
Assignee: Woma Apparatebau Wolfgang Maasberg and Co GmbH
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Filing: 1966-02-28
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Granted: 1969-01-28
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Expires: 1986-02-28
Abstract
No abstract record available.
Inventors
- 👤 Wolfgang Maasberg
- 👤 Karl Sprakel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:24
CPC Classifications
B; B24; B24C; B24C5/00; B24C5/02; B24C5/04
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) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |