US2474149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cutting curved plates used in spherical tanks
Assignee: Individual
•
Filing: 1944-09-19
•
Granted: 1949-06-21
•
Expires: 1964-09-19
Abstract
No abstract record available.
Inventors
- 👤 Hume Kenneth Bourne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:59
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/005; E; E04; E04H; E04H7/00; E04H7/02; E04H7/04; E04H7/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49995; Y10T29/49996
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1459369A
Cited
US1977135A
Cited
DE676607C
Cited
DE697590C
Cited
US2182707A
Cited
US2190360A
Cited
US2276755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |