US2770912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dusting attachment
Assignee: Individual
•
Filing: 1955-07-15
•
Granted: 1956-11-20
•
Expires: 1975-07-15
Abstract
No abstract record available.
Inventors
- 👤 Charles M Deem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:24
CPC Classifications
A; A01; A01M; A01M9/00; A01M9/0092
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US699435A
Cited
US1229994A
Cited
US1282697A
Cited
GB180648A
Cited
US1930588A
Cited
US2686045A
Cited
US2655406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |