US2666623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ice boring device
Assignee: PERCY N ROSS
•
Filing: 1950-12-21
•
Granted: 1954-01-19
•
Expires: 1970-12-21
Abstract
No abstract record available.
Inventors
- 👤 Melvin C Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:07
CPC Classifications
F; F25; F25C; F25C5/00; F25C5/02; F25C5/04; F25C5/043
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US120076A
Cited
US144510A
Cited
US286599A
Cited
US1090379A
Cited
US1857585A
Cited
US2329388A
Cited
US2401250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |