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Patent US2777339A successfully refreshed from Google Patents.
US2777339A
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US
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Portable boring machine
Assignee: Individual
•
Filing: 1953-07-30
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Granted: 1957-01-15
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Expires: 1973-07-30
Abstract
No abstract record available.
Inventors
- 👤 John A Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:11
CPC Classifications
B; B23; B23Q; B23Q9/00; B23Q2709/00; Y; Y10; Y10T; Y10T74/00; Y10T74/17; Y10T74/173; Y10T82/00; Y10T82/14; Y10T82/141; Y10T82/147
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US796731A
Cited
US1366716A
Cited
US1541062A
Cited
US1814078A
Cited
FR880940A
Cited
US2407341A
Cited
US2474726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |