Patent US5208830A successfully refreshed from Google Patents.
Patent US3394627A successfully refreshed from Google Patents.
US3394627A
Expired / Lapsed
US
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Expansive anchoring device
Assignee: Individual
•
Filing: 1967-07-13
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Granted: 1968-07-30
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Expires: 1987-07-13
Abstract
No abstract record available.
Inventors
- 👤 Metcalfe Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:43
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/04; F16B13/08; E; E21; E21D; E21D21/00; E21D21/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1031462A
Cited
US1419016A
Cited
US1850768A
Cited
FR991341A
Cited
DE913838C
Cited
US3139730A
Cited
US2944437A
Cited
FR1266450A
Cited
US3247754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |