Patent US3210846A successfully refreshed from Google Patents.
Patent US2766513A successfully refreshed from Google Patents.
US2766513A
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Method of fabricating a tubular element
Assignee: COMB EUGINEERING Inc
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Filing: 1951-11-24
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Granted: 1956-10-16
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Expires: 1971-11-24
Abstract
No abstract record available.
Inventors
- 👤 Huet Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:13
CPC Classifications
H; H04; H04J; H04J1/00; B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/28; B21C37/29; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428; Y10T29/49442; Y10T29/49444
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |