Patent US2999272A successfully refreshed from Google Patents.
US2999272A
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US
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Machine for forming pre-stressed hollow articles
Assignee: Studebaker Packard Corp
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Filing: 1958-05-09
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Granted: 1961-09-12
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Expires: 1978-05-09
Abstract
No abstract record available.
Inventors
- 👤 Elmer P Warnken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:07
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/44; B29C43/00; B29C43/02; B29C43/10; B29C43/12; Y; Y10; Y10S; Y10S264/00; Y10S264/73; Y10S425/00; Y10S425/019
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2153741A
Cited
US2456513A
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US2723426A
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US2763029A
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US2813573A
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US2759217A
Cited
US2856634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |