Patent US2243682A successfully refreshed from Google Patents.
Patent US1283193A successfully refreshed from Google Patents.
US1283193A
Expired / Lapsed
US
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Drill.
Assignee: EDWARD B BIERCE
•
Filing: 1918-03-19
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Granted: 1918-10-29
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Expires: 1938-03-19
Abstract
No abstract record available.
Inventors
- 👤 Granville A Humason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:03
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/08; E21B10/22; E21B10/24; C; C10; C10M; C10M2201/00; C10M2201/04; C10M2201/041
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) | 1921-10-28 | 1922-04-29 | 1922-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-10-28 | 1926-04-29 | 1926-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-10-28 | 1930-04-29 | 1930-10-29 | $7700.00 | Window Closed / Lapsed |