US2869482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dusting method and equipment
Assignee: WM WALTER FRANKEL
•
Filing: 1953-02-03
•
Granted: 1959-01-20
•
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 09:06
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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US2505243A
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US2614528A
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US2616766A
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US2648295A
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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) | 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 |