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Patent US2869482A successfully refreshed from Google Patents.
US2869482A
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Dusting method and equipment
Assignee: WM WALTER FRANKEL
•
Filing: 1953-02-03
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Granted: 1959-01-20
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Expires: 1973-02-03
Abstract
No abstract record available.
Inventors
- 👤 Britcher Charles William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:31
CPC Classifications
A; A21; A21C; A21C13/00; A21C13/02; A21C9/00; A21C9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1248629A
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US1582382A
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US2242182A
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US2382657A
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US2375766A
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US2501047A
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US2505243A
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US2608446A
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US2614528A
Cited
US2616766A
Cited
US2648295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |