US2559946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Key case
Assignee: Individual
•
Filing: 1946-08-14
•
Granted: 1951-07-10
•
Expires: 1966-08-14
Abstract
No abstract record available.
Inventors
- 👤 Helen C Craig
- 👤 William E Keen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:37
CPC Classifications
G; G07; G07D; G07D9/00; G07D9/002; A; A45; A45C; A45C11/00; A45C11/32; A45C11/321; A45C11/324; A45C1/00; A45C1/10; A45C2001/102; A45C2001/105; Y; Y10; Y10T; Y10T70/00; Y10T70/80; Y10T70/8432; Y10T70/8676
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US917894A
Cited
US2117516A
Cited
US2235606A
Cited
US2387319A
Cited
US2396615A
Cited
US2472337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |