US2817020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray cassette
Assignee: Individual
•
Filing: 1952-06-21
•
Granted: 1957-12-17
•
Expires: 1972-06-21
Abstract
No abstract record available.
Inventors
- 👤 Herbert S Akers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:12
CPC Classifications
G; G03; G03B; G03B42/00; G03B42/02; G03B42/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1213208A
Cited
US1909312A
Cited
US1550499A
Cited
US1662860A
Cited
US1950035A
Cited
US2003254A
Cited
US2247451A
Cited
US2403077A
Cited
US2384500A
Cited
US2666855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |