US3028938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locked joint and reinforcing construction for fragile sheet material
Assignee: Individual
•
Filing: 1959-03-12
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Granted: 1962-04-10
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Expires: 1979-03-12
Abstract
No abstract record available.
Inventors
- 👤 Schorr Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:28
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/68; E04; E04D; E04D3/00; E04D3/02; E04D3/06; E04D3/08; F; F16; F16B; F16B5/00; F16B5/0004; F16B5/0056; F16B5/0068; F16B5/0072; E04D2003/0806; E04D2003/0818; E04D2003/0825; E04D2003/0831; E04D2003/0843; E04D2003/0856
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) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |