Patent US2964185A successfully refreshed from Google Patents.
US2964185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple classifier
Assignee: Individual
•
Filing: 1956-09-10
•
Granted: 1960-12-13
•
Expires: 1976-09-10
Abstract
No abstract record available.
Inventors
- 👤 Katoh Saburo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:32
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/48; B03B5/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US154391A
Cited
US170440A
Cited
US361185A
Cited
US489650A
Cited
US1140700A
Cited
FR576032A
Cited
US1515757A
Cited
FR593266A
Cited
US2303222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |