Patent US2866631A successfully refreshed from Google Patents.
US2866631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand apparatus for flame cutting of perpendicular cylindrical apertures on cylindrical surfaces
Assignee: Individual
•
Filing: 1956-09-25
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Granted: 1958-12-30
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Expires: 1976-09-25
Abstract
No abstract record available.
Inventors
- 👤 Cink Albin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:32
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/24; B23Q35/26; B23K; B23K7/00; B23K7/005; B23K7/006; B23K7/007; B23Q9/00; B23Q9/0014; B23Q9/0021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE216960C
Cited
US2142436A
Cited
GB541389A
Cited
US2497853A
Cited
US2547320A
Cited
US2460826A
Cited
US2756987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |