Patent US3428948A successfully refreshed from Google Patents.
US3428948A
Expired / Lapsed
US
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Postage metering system
Assignee: General Research Inc
•
Filing: 1965-12-13
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Granted: 1969-02-18
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Expires: 1985-12-13
Abstract
No abstract record available.
Inventors
- 👤 Luther G Simjian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:04
CPC Classifications
G; G07; G07B; G07B17/00; G07B17/00016; G07B17/0008; G07B17/00185; G07B17/00362; G07B17/00459; G07B17/00508; G07B2017/00153; G07B2017/00161; G07B2017/00169; G07B2017/00516; G07B2017/00524; G07B2017/00548
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3057547A
Cited
US3035769A
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US2998188A
Cited
US3133700A
Cited
US3288934A
Cited
US3221934A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |