US2791471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transportation of coal by pipeline
Assignee: Consolidation Coal Co
•
Filing: 1953-10-26
•
Granted: 1957-05-07
•
Expires: 1973-10-26
Abstract
No abstract record available.
Inventors
- 👤 James T Clancey
- 👤 John A Phinney
- 👤 Thomas J Regan
- 👤 Edward J Wasp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:16
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A METHOD FOR MOVING COAL FROM MINES TO DISTANT MARKETS WHICH COMPRISES OBTAINING COAL HAVING A NOMINAL TOP SIZE IN THE RANGE OF 28 TO 6 MESH TYLER SCREEN SERIES AND HAVING LESS THAN 25 PERCENT BY WEIGHT OF PLUS 14 MESH PARTICLES, PREPARING A WATER SLURRY COMPRISING.
Claim 2
Independent Claim
48 words
A METHOD FOR MOVING COAL FROM MINES TO DISTANT MARKETS WHICH COMPRISES OBTAINING COAL HAVING A NOMINAL TOP SIZE IN THE RANGE OF 28 TO 6 MESH TYLER SCREEN SERIES AND HAVING LESS THAN 25 PERCENT BY WEIGHT OF PLUS 14 MESH PARTICLES, PREPARING A WATER SLURRY COMPRISING.
References Cited (Backward Citations)
US449102A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-06 | 1960-11-05 | 1961-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-06 | 1964-11-05 | 1965-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-06 | 1968-11-05 | 1969-05-07 | $7700.00 | Window Closed / Lapsed |