US3542991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing large tubular shafts
Assignee: Nydqvist and Holm AB
•
Filing: 1968-01-02
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Granted: 1970-11-24
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Expires: 1988-01-02
Abstract
No abstract record available.
Inventors
- 👤 Arne Herman Lindquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:37
CPC Classifications
F; F03; F03B; F03B11/00; B; B23; B23K; B23K33/00; B23K33/004; Y; Y02; Y02E; Y02E10/00; Y02E10/20; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |