US3404548A
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Assignee: OWEN F KEEFER
•
Filing: 1966-06-29
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Granted: 1968-10-08
•
Expires: 1986-06-29
Abstract
No abstract record available.
Inventors
- 👤 Owen F Keefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:56
CPC Classifications
E; E05; E05B; E05B29/00; E05B29/0013; E05B29/002; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7514; Y10T70/7559; Y10T70/7588; Y10T70/7593; Y10T70/7627; Y10T70/7633; Y10T70/7667; Y10T70/7689; Y10T70/7695; Y10T70/778; Y10T70/7791; Y10T70/7842; Y10T70/7847; Y10T70/7853; Y10T70/7881
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR485598A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |