US2258618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the manufacture of finned structures
Assignee: LUL PRODUCTS Inc
•
Filing: 1938-03-19
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Granted: 1941-10-14
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Expires: 1958-03-19
Abstract
No abstract record available.
Inventors
- 👤 Lester U Larkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:01
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/22; B21C37/24; B21D; B21D53/00; B21D53/02; B21D53/08; B21D53/085; Y; Y10; Y10S; Y10S414/00; Y10S414/10; Y10S414/114; Y10S414/116; Y10T; Y10T29/00; Y10T29/53; Y10T29/53113; Y10T29/53122; Y10T29/53478; Y10T29/53978
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-10-13 | 1945-04-14 | 1945-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-10-13 | 1949-04-14 | 1949-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-10-13 | 1953-04-14 | 1953-10-14 | $7700.00 | Window Closed / Lapsed |