US2442468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine and pump unit
Assignee: CLARK BROS Co Inc
•
Filing: 1946-01-29
•
Granted: 1948-06-01
•
Expires: 1966-01-29
Abstract
No abstract record available.
Inventors
- 👤 John N Mackendrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:03
CPC Classifications
F; F02; F02B; F02B33/00; F02B33/02; F02B33/06; F02B33/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1009420A
Cited
US1819709A
Cited
US1934880A
Cited
US1951751A
Cited
DE705025C
Cited
US2147666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-01 | 1951-12-01 | 1952-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-01 | 1955-12-01 | 1956-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-01 | 1959-12-01 | 1960-06-01 | $7700.00 | Window Closed / Lapsed |