US2819875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic boring device
Assignee: Individual
•
Filing: 1954-09-08
•
Granted: 1958-01-14
•
Expires: 1974-09-08
Abstract
No abstract record available.
Inventors
- 👤 Archie W Gage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:54
CPC Classifications
E; E03; E03B; E03B3/00; E03B3/06; E03B3/08; E03B3/12; Y; Y02; Y02A; Y02A20/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1338460A
Cited
US1445289A
Cited
US1515066A
Cited
US1963368A
Cited
US2323027A
Cited
FR1070038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |