US2416004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insect control
Assignee: Shell Development Co
•
Filing: 1942-04-26
•
Granted: 1947-02-18
•
Expires: 1962-04-26
Abstract
No abstract record available.
Inventors
- 👤 Walter E Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:10
CPC Classifications
A; A01; A01N; A01N37/00; A01N37/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE20689E
Cited
US2037389A
Cited
US1991955A
Cited
US2206351A
Cited
US2205076A
Cited
US2280850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-17 | 1950-08-19 | 1951-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-17 | 1954-08-19 | 1955-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-17 | 1958-08-19 | 1959-02-18 | $7700.00 | Window Closed / Lapsed |