US2634952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust collector for overhead drilling
Assignee: Individual
•
Filing: 1952-02-15
•
Granted: 1953-04-14
•
Expires: 1972-02-15
Abstract
No abstract record available.
Inventors
- 👤 Blaine R Brinkley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:19
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/01; E21B21/015
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1128675A
Cited
US1664786A
Cited
US1930099A
Cited
US2041689A
Cited
US2327497A
Cited
US2279186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |