US2442379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Segregator system
Assignee: Individual
•
Filing: 1945-06-26
•
Granted: 1948-06-01
•
Expires: 1965-06-26
Abstract
No abstract record available.
Inventors
- 👤 Samiran David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:55
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/76; B67D7/766; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214; C; C10; C10G; C10G33/00; C10G33/06; F; F02; F02M; F02M37/00; F02M37/22; F02M37/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21741E
Cited
US1948543A
Cited
US2057693A
Cited
US2120266A
Cited
US2311697A
Cited
US2375428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-01 | 1951-12-01 | 1952-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-01 | 1955-12-01 | 1956-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-01 | 1959-12-01 | 1960-06-01 | $7700.00 | Window Closed / Lapsed |