US2813535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purged web edge detector
Assignee: Askania Regulator Co
•
Filing: 1956-04-03
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Granted: 1957-11-19
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Expires: 1976-04-03
Abstract
No abstract record available.
Inventors
- 👤 Frank J Markey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:24
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/005; B; B65; B65H; B65H23/00; B65H23/02; B65H23/0204; B65H23/0212; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2322
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |