US2985802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic impulse rapper
Assignee: Beazer East Inc
•
Filing: 1958-03-28
•
Granted: 1961-05-23
•
Expires: 1978-03-28
Abstract
No abstract record available.
Inventors
- 👤 John W Drenning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:45
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/74; B03C3/76; B03C3/765
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2268687A
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US2777535A
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GB757582A
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US2909713A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |