Patent US2704873A successfully refreshed from Google Patents.
US2704873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remotely controlled pipe lining apparatus
Assignee: CENTRILINE Corp
•
Filing: 1951-07-26
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Granted: 1955-03-29
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Expires: 1971-07-26
Abstract
No abstract record available.
Inventors
- 👤 Kenneth K Kirwan
- 👤 Alfred G Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:25
CPC Classifications
B; B28; B28B; B28B19/00; B28B19/0023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1958-03-28 | 1958-09-27 | 1959-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-28 | 1962-09-27 | 1963-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-28 | 1966-09-27 | 1967-03-29 | $7700.00 | Window Closed / Lapsed |