Patent US3513842A successfully refreshed from Google Patents.
US3513842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective device
Assignee: Individual
•
Filing: 1968-04-10
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Granted: 1970-05-26
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Expires: 1988-04-10
Abstract
No abstract record available.
Inventors
- 👤 George Keenan
- 👤 Dennis Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:49
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/10; A61F13/104; A61F13/105; A61F5/00; A61F5/01; A61F5/0102; A61F5/0104; A61F5/0106; A61F5/0109; A61F2013/00089; A61F2013/00217; A61F2013/00272; A61F13/15; A61F13/51; A61F13/514; A61F13/51401; A61F2013/51409; A61F2013/51427; A61F13/53; A61F2013/530802; A61F2013/530992
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) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |