Patent US2620906A successfully refreshed from Google Patents.
US2620906A
Expired / Lapsed
US
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Attaching clip for wall surfacing
Assignee: Kawneer Co Inc
•
Filing: 1947-01-30
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Granted: 1952-12-09
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Expires: 1967-01-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Morris Ketchum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:20
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0801; E04F13/0803; E04F13/081; E04F13/0814; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44641; Y10T24/44769; Y10T24/44906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2057135A
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US1968798A
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US2116737A
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US2148434A
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US2173524A
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US2180925A
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US2258247A
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US2279916A
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US2473400A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |