US3034164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boring machine
Assignee: Guy F Atkinson Co
•
Filing: 1958-07-07
•
Granted: 1962-05-15
•
Expires: 1978-07-07
Abstract
No abstract record available.
Inventors
- 👤 Donald B Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:30
CPC Classifications
F; F27; F27D; F27D25/00; F27D25/001; B; B23; B23B; B23B41/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US846196A
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US998534A
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US1270092A
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US1388490A
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US1730399A
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US1888032A
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GB585709A
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US2438673A
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US2695158A
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US2705128A
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US2775439A
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US2741462A
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US2751203A
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US2743096A
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US2911662A
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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) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |