Patent US2314013A successfully refreshed from Google Patents.
US2314013A
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Drilling apparatus
Assignee: Mueller Co
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Filing: 1942-01-31
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Granted: 1943-03-16
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Expires: 1962-01-31
Abstract
No abstract record available.
Inventors
- 👤 Frank H Mueller
- 👤 Walter J Bowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:35
CPC Classifications
F; F16; F16L; F16L41/00; F16L41/04; F16L41/06; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/612; Y10T137/6123; Y10T279/00; Y10T279/17; Y10T279/17957; Y10T279/17965; Y10T279/34; Y10T279/3481; Y10T29/00; Y10T29/53; Y10T29/53552; Y10T29/53796; Y10T29/53835; Y10T408/00; Y10T408/94; Y10T408/95
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) | 1946-03-15 | 1946-09-14 | 1947-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-03-15 | 1950-09-14 | 1951-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-03-15 | 1954-09-14 | 1955-03-16 | $7700.00 | Window Closed / Lapsed |