US3434503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making tubing and product thereof
Assignee: Bundy Corp
•
Filing: 1966-10-12
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Granted: 1969-03-25
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Expires: 1986-10-12
Abstract
No abstract record available.
Inventors
- 👤 David R Knox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:59
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/08; B21C37/09; B32; B32B; B32B15/00; B32B15/01; B32B15/013; B32B15/015; F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/08; F16L9/00; F16L9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1318809A
Cited
US1930191A
Cited
US2014983A
Cited
US2380107A
Cited
US2866480A
Cited
US2730135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |