US3046638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing hollow sheetmetal panel structures
Assignee: Individual
•
Filing: 1959-02-11
•
Granted: 1962-07-31
•
Expires: 1979-02-11
Abstract
No abstract record available.
Inventors
- 👤 Jean H Melzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:48
CPC Classifications
B; B21; B21D; B21D47/00; E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; Y; Y10; Y10T; Y10T29/00; Y10T29/18; Y10T29/49; Y10T29/4935; Y10T29/49366; Y10T29/49616; Y10T29/49623; Y10T29/49629; Y10T29/49826; Y10T29/49879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US880820A
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US843726A
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US866140A
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US2141642A
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US2256812A
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US2778458A
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US2746139A
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US2878560A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |