US2920894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1956-06-11
•
Granted: 1960-01-12
•
Expires: 1976-06-11
Abstract
No abstract record available.
Inventors
- 👤 Horace C Kreinick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:13
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/14; Y10T279/17; Y10T279/17957; Y10T279/24; Y10T279/247
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2675653A
Cited
US785162A
Cited
US1623116A
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US1734439A
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US2021536A
Cited
US2400686A
Cited
US2388697A
Cited
US2655822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |