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Patent US2798980A successfully refreshed from Google Patents.
US2798980A
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Assignee: Zeller Corp
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Filing: 1955-07-11
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Granted: 1957-07-09
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Expires: 1975-07-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Howard J Beardslee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:48
CPC Classifications
H; H01; H01T; H01T13/00; H01T13/20; H01T13/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1164082A
Cited
US2459286A
Cited
US2521647A
Cited
US2487531A
Cited
US2615441A
Cited
US2691971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |