US2963994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dusting equipment
Assignee: Individual
•
Filing: 1956-09-28
•
Granted: 1960-12-13
•
Expires: 1976-09-28
Abstract
No abstract record available.
Inventors
- 👤 Charles W Britcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:41
CPC Classifications
A; A21; A21C; A21C7/00; A21C7/02; A21C9/00; A21C9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US903584A
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US1283512A
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US1401795A
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US1661775A
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US1910536A
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US2028410A
Cited
US2047430A
Cited
US2331510A
Cited
US2505243A
Cited
US2451096A
Cited
US2614528A
Cited
US2642821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |