US3487518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making a reinforced structural member
Assignee: Individual
•
Filing: 1967-08-21
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Granted: 1970-01-06
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Expires: 1987-08-21
Abstract
No abstract record available.
Inventors
- 👤 Henry Hopfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:20
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0003; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/20; B29C70/88; B29C70/887; C; C22; C22C; C22C47/00; C22C47/02; C22C47/06; C22C47/062; C22C47/068; E; E04; E04C; E04C3/00; E04C3/02; E04C3/29; E06; E06C; E06C7/00; E06C7/08; B29K; B29K2105/00; B29L; B29L2031/00; B29L2031/001; B29L2031/003; B29L2031/005; Y; Y10; Y10S; Y10S228/00; Y10S228/903; Y10S273/00; Y10S273/07; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49634; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |