Patent US2879649A successfully refreshed from Google Patents.
US2879649A
Expired / Lapsed
US
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Pipe laying device
Assignee: Individual
•
Filing: 1953-08-21
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Granted: 1959-03-31
•
Expires: 1973-08-21
Abstract
No abstract record available.
Inventors
- 👤 Hartwell A Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:05
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/02; E02F5/10; E02F5/104; E02F5/106; E02F5/107; H; H02; H02G; H02G1/00; H02G1/06; H02G1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US281415A
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US590392A
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US669192A
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US2144063A
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DE727746C
Cited
US2659211A
Cited
US2610415A
Cited
US2602300A
Cited
US2693085A
Cited
US2755632A
Cited
US2718717A
Cited
US2765548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |