US2857622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making sealing means for sewer pipe joints
Assignee: American Vitrified Products Co
•
Filing: 1953-11-10
•
Granted: 1958-10-28
•
Expires: 1973-11-10
Abstract
No abstract record available.
Inventors
- 👤 Robert B Cleverly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:09
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/04; B29C35/00; B29C35/02; B29C35/12; B29C65/78; B29C65/80; B29C66/00; B29C66/90; B29C66/91; B29C66/914; B29C66/9141; B29C66/91411; B29C66/9161; B29C66/91651; B29C66/919; B29C66/9192; B29C66/91921; B29C66/91931; B29C66/91933; B29C70/00; B29C70/68; B29C70/74; B29C70/76; B29C70/766; B29C39/00; B29C66/91653; B29C66/91655; B29C66/92; B29C66/924; B29C66/9241; B29C66/94; B29C66/949; Y; Y10; Y10S; Y10S264/00; Y10S264/46; Y10S285/00; Y10S285/923; Y10S425/00; Y10S425/218
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |