US2609720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die for pipe tongs and method of making same
Assignee: CHARLES C WEISS
•
Filing: 1951-10-19
•
Granted: 1952-09-09
•
Expires: 1971-10-19
Abstract
No abstract record available.
Inventors
- 👤 Norval J Barnard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:19
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/16; E21B19/161; Y; Y10; Y10T; Y10T279/00; Y10T279/19; Y10T279/1986; Y10T279/34; Y10T279/3462
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1844616A
Cited
US1906696A
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US2187956A
Cited
US2406520A
Cited
US2374192A
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US2517366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |