Patent US2440472A successfully refreshed from Google Patents.
US2440472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stage incubator for microscopes
Assignee: BELMONT RADIO Corp
•
Filing: 1944-09-11
•
Granted: 1948-04-27
•
Expires: 1964-09-11
Abstract
No abstract record available.
Inventors
- 👤 Horner Wilfred
- 👤 Wesselman Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:08
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/24; G02B21/30; C; C12; C12M; C12M23/00; C12M23/54; C12M41/00; C12M41/12; C12M41/14; C12M41/30; C12M41/36
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1144942A
Cited
US1144941A
Cited
US1205838A
Cited
GB206995A
Cited
US1609129A
Cited
US1964462A
Cited
US2048128A
Cited
US2265182A
Cited
US2312488A
Cited
US2351282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-27 | 1951-10-27 | 1952-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-27 | 1955-10-27 | 1956-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-27 | 1959-10-27 | 1960-04-27 | $7700.00 | Window Closed / Lapsed |