Patent US2827958A successfully refreshed from Google Patents.
US2827958A
Expired / Lapsed
US
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Chain closure and partition for openings
Assignee: Individual
•
Filing: 1955-08-03
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Granted: 1958-03-25
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Expires: 1975-08-03
Abstract
No abstract record available.
Inventors
- 👤 Earnest M Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:28
CPC Classifications
B; B60; B60P; B60P7/00; B60P7/06; B60P7/135; B60P7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US980789A
Cited
US1064130A
Cited
US1970610A
Cited
US2088072A
Cited
US2136042A
Cited
US2546929A
Cited
US2612221A
Cited
US2627821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |