US2921710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic shell door lock
Assignee: Cummings Landau Laundry Machinery Co Inc
•
Filing: 1957-05-20
•
Granted: 1960-01-19
•
Expires: 1977-05-20
Abstract
No abstract record available.
Inventors
- 👤 Hutterer Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:06
CPC Classifications
D; D06; D06F; D06F37/00; D06F37/26; D06F37/28; F; F16; F16J; F16J13/00; F16J13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1682116A
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US2120167A
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US2131932A
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US2857074A
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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) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |