US2451864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosives
Assignee: Individual
•
Filing: 1945-05-15
•
Granted: 1948-10-19
•
Expires: 1965-05-15
Abstract
No abstract record available.
Inventors
- 👤 Daniel P O'brien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:51
CPC Classifications
C; C06; C06B; C06B33/00; C06B33/06; C06C; C06C9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1342802A
Cited
GB189512137A
Cited
US841172A
Cited
US1045671A
Cited
GB124796A
Cited
US1351078A
Cited
US1404653A
Cited
DE460323C
Cited
US2095302A
Cited
US2410801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |