US2878770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal expanding line-up pipe clamp
Assignee: Individual
•
Filing: 1955-08-09
•
Granted: 1959-03-24
•
Expires: 1975-08-09
Abstract
No abstract record available.
Inventors
- 👤 Work John Scott
- 👤 Ervan H Work
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:07
CPC Classifications
F; F16; F16L; F16L1/00; F16L1/024; F16L1/06; F16L1/10; B; B23; B23K; B23K37/00; B23K37/04; B23K37/053; B23K37/0531
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1905178A
Cited
US2691952A
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US2408255A
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US2413103A
Cited
US2594000A
Cited
US2630278A
Cited
US2739559A
Cited
US2694376A
Cited
US2741206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |