Patent US2497445A successfully refreshed from Google Patents.
US2497445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film marking device
Assignee: General Electric X Ray Corp
•
Filing: 1944-10-09
•
Granted: 1950-02-14
•
Expires: 1964-10-09
Abstract
No abstract record available.
Inventors
- 👤 Gaul Clyde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:56
CPC Classifications
G; G03; G03B; G03B42/00; G03B42/02; G03B42/04; G03B42/047
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US791997A
Cited
US1091574A
Cited
US1177715A
Cited
US1225073A
Cited
US1333478A
Cited
US1507099A
Cited
US1821577A
Cited
US2018175A
Cited
US2071912A
Cited
US2342847A
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 |