US2720022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making tubing from strip metal stock
Assignee: Bundy Tubing Co
•
Filing: 1950-07-12
•
Granted: 1955-10-11
•
Expires: 1970-07-12
Abstract
No abstract record available.
Inventors
- 👤 Andrew J Snively
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:39
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/08; B21C37/09; F; F16; F16L; F16L9/00; F16L9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US518570A
Cited
GB347148A
Cited
US1895133A
Cited
US2014982A
Cited
US2038600A
Cited
US2210338A
Cited
US2475566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |