US2670180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for advancing subterranean pipe
Assignee: GROUND WATER Inc
•
Filing: 1949-05-27
•
Granted: 1954-02-23
•
Expires: 1969-05-27
Abstract
No abstract record available.
Inventors
- 👤 Ranney Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:16
CPC Classifications
E; E03; E03B; E03B3/00; E03B3/06; E03B3/08; E03B3/10; E03B3/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US405200A
Cited
US1994884A
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US2126575A
Cited
US2126576A
Cited
US2198386A
Cited
US2121858A
Cited
US2212491A
Cited
US2492151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |