US3460232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll-welded ring forming process
Assignee: McDonnell Douglas Corp
•
Filing: 1965-10-24
•
Granted: 1969-08-12
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Expires: 1985-10-24
Abstract
No abstract record available.
Inventors
- 👤 Richard T Pfaffenberger
- 👤 Leonard R Van Horik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:14
CPC Classifications
B; B21; B21H; B21H1/00; B21H1/06; B23; B23K; B23K20/00; B23K20/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3044160A
Cited
US3186083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |