US2742856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burster
Assignee: Individual
•
Filing: 1944-11-06
•
Granted: 1956-04-24
•
Expires: 1964-11-06
Abstract
No abstract record available.
Inventors
- 👤 Louis F Fieser
- 👤 Emanuel B Hershberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:54
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/36; F42B12/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1311521A
Cited
US1294150A
Cited
US1333786A
Cited
US1484190A
Cited
US1791716A
Cited
US1878491A
Cited
GB525972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |