Patent US3728468A successfully refreshed from Google Patents.
US3548604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Post implanting method and vehicular apparatus
Assignee: Stillwell Gerard Construction Co
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Filing: 1969-06-23
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Granted: 1970-12-22
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Expires: 1989-06-23
Abstract
No abstract record available.
Inventors
- 👤 Wallace S Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:03
CPC Classifications
E; E04; E04H; E04H17/00; E04H17/26; E04H17/261; E04H17/263; E02; E02D; E02D7/00; E02D7/02; E02D7/06; E02D7/14; E02D7/16; E02D7/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2655006A
Cited
US3447613A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |