US2850836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust spraying apparatus
Assignee: Individual
•
Filing: 1953-10-26
•
Granted: 1958-09-09
•
Expires: 1973-10-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas D Copeland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:21
CPC Classifications
A; A01; A01M; A01M9/00; A01M9/0084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1321412A
Cited
US1736419A
Cited
GB361082A
Cited
GB453980A
Cited
US2551286A
Cited
US2691236A
Cited
US2712198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |