US2497572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Percolator
Assignee: WM J Stange Co
•
Filing: 1946-01-11
•
Granted: 1950-02-14
•
Expires: 1966-01-11
Abstract
No abstract record available.
Inventors
- 👤 Harry R Ansel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:36
CPC Classifications
C; C11; C11B; C11B1/00; C11B1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US626991A
Cited
US700033A
Cited
GB190511957A
Cited
US1000086A
Cited
US1638530A
Cited
FR559642A
Cited
US1861537A
Cited
US2082752A
Cited
US2110384A
Cited
US2253500A
Cited
US2327803A
Cited
US2355069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |