US1601029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for joining concrete tures
Assignee: Individual
•
Filing: 1925-01-20
•
Granted: 1926-09-28
•
Expires: 1945-01-20
Abstract
Abstract 241,852. Ligonnet, E. Oct. 21, 1924, [Convention date]. Addition to 230,015. Moulding pipes and tubes.- The linings i of adjoining cylindrical or conical objects g, h, made according to the invention of the parent Specification, are joined by juxtaposing the ends of the linings, softening them by heat, and welding them together by compression and subsequently applying similar plastic material in the depressions k, l caused by these operations.. The joint may be strengthened by means of rings of metal or reinforced cement applied to the outside of the objects g, h.
Inventors
- 👤 Ligonnet Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:39
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/10; F16L13/11; B; B28; B28B; B28B21/00; B28B21/70; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C66/00; B29C66/01; B29C66/03; B29C66/032; B29C66/038; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/114; B29C66/1142; B29C66/32; B29C66/324; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5221; B29C66/5229; B29C66/70; B29C66/72; B29C66/723; B29C65/24; B29C65/26; B29C65/28; B29C65/30; B29L; B29L2023/00; B29L2023/22; Y; Y10; Y10S; Y10S52/00; Y10S52/07; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1929-09-27 | 1930-03-29 | 1930-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-09-27 | 1934-03-29 | 1934-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-09-27 | 1938-03-29 | 1938-09-28 | $7700.00 | Window Closed / Lapsed |