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US2707616A
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US
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Boring-head for horizontal drills in water-collecting devices
Assignee: Renther Tiefbau G M B H
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Filing: 1954-08-10
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Granted: 1955-05-03
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Expires: 1974-08-10
Abstract
No abstract record available.
Inventors
- 👤 Schad Rudolf Paul Ju Christian
- 👤 Koch Rolf Jakob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:44
CPC Classifications
E; E03; E03B; E03B3/00; E03B3/06; E03B3/08; E03B3/10; E03B3/11; Y; Y10; Y10S; Y10S239/00; Y10S239/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2126576A
Cited
US2670180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-02 | 1958-11-01 | 1959-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-02 | 1962-11-01 | 1963-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-02 | 1966-11-01 | 1967-05-03 | $7700.00 | Window Closed / Lapsed |