US2740229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powder dispenser
Assignee: LETHELIN PRODUCTS Co Inc
•
Filing: 1952-07-10
•
Granted: 1956-04-03
•
Expires: 1972-07-10
Abstract
No abstract record available.
Inventors
- 👤 George G Wittwer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:58
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US148069A
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US412134A
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US726122A
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US936186A
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US998052A
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US1041378A
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US1098653A
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US1158622A
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US1893139A
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US2159171A
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US2630237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |