US2870522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing tubing
Assignee: Individual
•
Filing: 1951-09-06
•
Granted: 1959-01-27
•
Expires: 1971-09-06
Abstract
No abstract record available.
Inventors
- 👤 Charles E Hickman
- 👤 Allen L Goldsmith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:26
CPC Classifications
B; B21; B21C; B21C31/00; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US278695A
Cited
US278696A
Cited
US403940A
Cited
US972928A
Cited
US1028102A
Cited
US1417249A
Cited
US1561577A
Cited
US1769205A
Cited
US1849044A
Cited
GB284085A
Cited
US1741815A
Cited
US1782692A
Cited
GB410624A
Cited
US2048557A
Cited
US2167971A
Cited
US2176365A
Cited
US2291204A
Cited
US2359453A
Cited
US2347639A
Cited
US2377908A
Cited
US2453165A
Cited
GB593508A
Cited
GB646296A
Cited
GB660747A
Cited
US2720310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |