US2712873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe laying tractor
Assignee: Caterpillar Inc
•
Filing: 1949-11-22
•
Granted: 1955-07-12
•
Expires: 1969-11-22
Abstract
No abstract record available.
Inventors
- 👤 Robert A Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:03
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/18; B66C23/36; B66C23/44; F; F16; F16L; F16L1/00; F16L1/024; F16L1/028; F16L1/036
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US849106A
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US984155A
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US1353841A
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US1520397A
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US1606628A
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US1676645A
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US1877556A
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US1851346A
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US1925169A
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US2261870A
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US2425663A
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US2513942A
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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) | 1958-07-11 | 1959-01-10 | 1959-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-11 | 1963-01-10 | 1963-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-11 | 1967-01-10 | 1967-07-12 | $7700.00 | Window Closed / Lapsed |