Patent US2137230A successfully refreshed from Google Patents.
US2598535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sampling device
Assignee: Wausau Paper Mills LLC
•
Filing: 1948-06-30
•
Granted: 1952-05-27
•
Expires: 1968-06-30
Abstract
No abstract record available.
Inventors
- 👤 Green Charles Macmillan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:18
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/20; G01N1/2035; G01N2001/205; G01N2001/2057
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US725893A
Cited
US1010032A
Cited
US1612406A
Cited
US1755536A
Cited
US1966712A
Cited
US1859876A
Cited
US2012836A
Cited
US2084397A
Cited
US2140920A
Cited
US2439287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-27 | 1955-11-26 | 1956-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-27 | 1959-11-26 | 1960-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-27 | 1963-11-26 | 1964-05-27 | $7700.00 | Window Closed / Lapsed |