Patent US2568781A successfully refreshed from Google Patents.
US2568781A
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Assignee: ANNA MAY WATTS SERGENT
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Filing: 1948-03-11
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Granted: 1951-09-25
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Expires: 1968-03-11
Abstract
No abstract record available.
Inventors
- 👤 Watts Anna Carolina Anderson
- 👤 Company Montreal Trust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:50
CPC Classifications
F; F22; F22B; F22B13/00; F22B13/02; F22B13/023; F24; F24H; F24H1/00; F24H1/22; F24H1/24; F24H1/26; F24H1/28; F24H1/285
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US338670A
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US424377A
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US452502A
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US1656222A
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US1749909A
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US1712543A
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US1924209A
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US1986914A
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US2174663A
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US2383924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |