Patent US3499179A successfully refreshed from Google Patents.
US3499179A
Expired / Lapsed
US
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Bridges
Assignee: UK Secretary of State for Defence
•
Filing: 1967-09-01
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Granted: 1970-03-10
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Expires: 1987-09-01
Abstract
No abstract record available.
Inventors
- 👤 Robin Trench Weld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:35
CPC Classifications
E; E01; E01D; E01D15/00; E01D15/12; E01D15/133; B; B63; B63B; B63B35/00; B63B35/34; B63B35/38; E01D15/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2588609A
Cited
US3036539A
Cited
US3021544A
Cited
DE1060280B
Cited
US2993459A
Cited
US3323157A
Cited
US3386117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |