US3461531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a tubular product
Assignee: WILLIAM J DE GAIN
•
Filing: 1967-03-09
•
Granted: 1969-08-19
•
Expires: 1987-03-09
Abstract
No abstract record available.
Inventors
- 👤 William J De Gain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:14
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/156; B21C37/157; B21C37/08; B21C37/0803; B23; B23K; B23K35/00; B23K35/001; B23K35/22; B23K35/24; B23K35/26; B23K9/00; B23K9/04; C; C23; C23C; C23C26/00; C23C26/02; F; F16; F16L; F16L9/00; F16L9/02; F16L9/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428; Y10T29/496; Y10T29/49826; Y10T29/49877
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US24480A
Cited
US1053614A
Cited
US1057098A
Cited
US1169689A
Cited
US1270402A
Cited
US2371991A
Cited
US2965961A
Cited
US2771077A
Cited
US3326091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |