US2887770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of stabilizing and processing cushioning units
Assignee: National Malleable and Steel Castings Co
•
Filing: 1955-06-06
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Granted: 1959-05-26
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Expires: 1975-06-06
Abstract
No abstract record available.
Inventors
- 👤 Spence Lorna Slater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:40
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/40; F16F1/406; B; B61; B61G; B61G9/00; B61G9/04; B61G9/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49609; Y10T29/49615; Y10T29/49764; Y10T29/49771; Y10T29/49776; Y10T29/49826; Y10T29/49863; Y10T29/4987
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2031797A
Cited
US2665864A
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US2598762A
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US2686667A
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US2680284A
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US2781135A
Cited
US2700208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |