US2474919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Draft rigging shock absorber
Assignee: National Malleable and Steel Castings Co
•
Filing: 1944-07-25
•
Granted: 1949-07-05
•
Expires: 1964-07-25
Abstract
No abstract record available.
Inventors
- 👤 Hubert L Spence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:59
CPC Classifications
B; B61; B61G; B61G9/00; B61G9/04; B61G9/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1085238A
Cited
US1183944A
Cited
US1153793A
Cited
US1987561A
Cited
US2024868A
Cited
US2241353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |