Patent US2758321A successfully refreshed from Google Patents.
US2758321A
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Reinforced plastic construction and method of manufacture
Assignee: ANCHORAGE PLASTICS Corp
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Filing: 1956-01-05
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Granted: 1956-08-14
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Expires: 1976-01-05
Abstract
No abstract record available.
Inventors
- 👤 John W Westfall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:23
CPC Classifications
B; B63; B63B; B63B5/00; B63B5/24; B63B2005/242; B63B73/00; B63B73/70; B63B73/72; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31616; Y10T428/3162
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
65 words
A STRUCTURALLY REINFORCED PLASTIC SHELL CONSTRUCTION COMPRISING A PLASTIC SHELL, A PLURALITY OF SPACED REINFORCING RIBS IN SAID SHELL, SAID RIBS CONFORMING TO THE CONTOUR OF SAID SHELL, SAID RIBS EACH HAVING A PLURALITY OF SPACED OPENINGS ADJACENT THE EDGES OF SAID RIBS ABUTTING SAID SHELL, AND PLASTIC MATERIAL INTEGRAL WITH SAID SHELL EXTENDING AROUND THE EDGES OF EACH RIB AND THROUGH SAID RIB OPENINGS.
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) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |