Patent US2883678A successfully refreshed from Google Patents.
US2883678A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1958-05-14
•
Granted: 1959-04-28
•
Expires: 1978-05-14
Abstract
No abstract record available.
Inventors
- 👤 Margaret M Heffernan
- 👤 John J Heffernan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:21
CPC Classifications
A; A47; A47C; A47C29/00; A47C29/003; A47D; A47D7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US135138A
Cited
US234016A
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US979506A
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US1216719A
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US1362987A
Cited
US1897525A
Cited
US1961637A
Cited
US2382851A
Cited
US2571406A
Cited
US2699794A
Cited
GB771126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |