Patent US2730652A successfully refreshed from Google Patents.
US2730652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus with focalized electronic beam, such namely as microscopes
Assignee: Thales SA
•
Filing: 1951-03-10
•
Granted: 1956-01-10
•
Expires: 1971-03-10
Abstract
No abstract record available.
Inventors
- 👤 Gutton Henri
- 👤 Violet Frederic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:37
CPC Classifications
H; H05; H05G; H05G1/00; H05G1/08; H05G1/10; H05G1/20; H01; H01J; H01J37/00; H01J37/02; H01J37/24; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/533; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1933219A
Cited
US2038683A
Cited
US2145332A
Cited
US2208422A
Cited
US2449536A
Cited
US2292100A
Cited
US2355191A
Cited
US2363359A
Cited
US2431051A
Cited
US2421182A
Cited
US2577112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |