US2801098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable apparatus for burning circular holes in metal
Assignee: Individual
•
Filing: 1953-02-05
•
Granted: 1957-07-30
•
Expires: 1973-02-05
Abstract
No abstract record available.
Inventors
- 👤 Ross F Plumb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:34
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/10; B23K7/105; B23K7/107; Y; Y10; Y10T; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8598
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE232264C
Cited
US1176584A
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US2377844A
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US2424286A
Cited
US2463408A
Cited
US2499938A
Cited
US2580398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |