US2914971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counter-blow forging hammer
Assignee: LOMBARD CORP
•
Filing: 1957-05-28
•
Granted: 1959-12-01
•
Expires: 1977-05-28
Abstract
No abstract record available.
Inventors
- 👤 Edgar H Kendall
- 👤 Terhune Howard
- 👤 Daniel L Lombard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:04
CPC Classifications
B; B21; B21J; B21J7/00; B21J7/20; B21J7/22; B21J7/34
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE128489C
Cited
US545758A
Cited
US615214A
Cited
US1990478A
Cited
DE630111C
Cited
GB467193A
Cited
US2117575A
Cited
FR857118A
Cited
US2241787A
Cited
US2220037A
Cited
DE845003C
Cited
US2386155A
Cited
DE946404C
Cited
US2729943A
Cited
US2807177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |