US2103252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rock drill
Assignee: Sullivan Machinery Co
•
Filing: 1934-03-06
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Granted: 1937-12-28
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Expires: 1954-03-06
Abstract
No abstract record available.
Inventors
- 👤 Elmer G Gartin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:52
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-12-27 | 1941-06-28 | 1941-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-12-27 | 1945-06-28 | 1945-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-12-27 | 1949-06-28 | 1949-12-28 | $7700.00 | Window Closed / Lapsed |