Patent US3308532A successfully refreshed from Google Patents.
Patent US2903740A successfully refreshed from Google Patents.
US2903740A
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US
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Means for forming hollow articles
Assignee: Individual
•
Filing: 1952-12-10
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Granted: 1959-09-15
•
Expires: 1972-12-10
Abstract
No abstract record available.
Inventors
- 👤 Parfrey Francis Trigg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:06
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/64; B29C49/66; A; A45; A45D; A45D2/00; A45D2/12; A45D2/24; A45D2/32; B29C49/02; B29C49/04; B29C49/28; B29C49/30; B29C49/32; B65; B65D; B65D81/00; B65D81/18; B65D81/20; B65D81/2007; B65D81/2015; B29C35/00; B29C35/16; B29C2035/1658; B29C49/58; B29C2049/5844; B29C49/6604; B29C2049/6606; B29C2049/6607; B29C2049/6615; B29C2049/6646; B29C33/00; B29C33/20; B29C33/26; Y; Y10; Y10S; Y10S425/00; Y10S425/806
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |