US1647447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fastening tubular bodies in holes of other bodies
Assignee: Babcock and Wilcox Co
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Filing: 1922-12-28
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Granted: 1927-11-01
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Expires: 1942-12-28
Abstract
No abstract record available.
Inventors
- 👤 George J Hartnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:30
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/06; F; F16; F16B; F16B17/00; F16B17/006; F16B2200/00; F16B2200/40; F16B2200/406; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992; Y10T29/49938; Y10T29/4994
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1930-10-31 | 1931-05-02 | 1931-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-10-31 | 1935-05-02 | 1935-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-10-31 | 1939-05-02 | 1939-11-01 | $7700.00 | Window Closed / Lapsed |