Patent US2150020A successfully refreshed from Google Patents.
US2150020A
Expired / Lapsed
US
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Collar holder
Assignee: Dolan & Bullock
•
Filing: 1937-10-26
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Granted: 1939-03-07
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Expires: 1957-10-26
Abstract
No abstract record available.
Inventors
- 👤 Carlson Oscar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:34
CPC Classifications
A; A41; A41B; A41B3/00; A41B3/08; Y; Y10; Y10T; Y10T24/00; Y10T24/19; Y10T24/1966; Y10T24/1997; Y10T24/44; Y10T24/44256
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-03-06 | 1942-09-05 | 1943-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-03-06 | 1946-09-05 | 1947-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-03-06 | 1950-09-05 | 1951-03-07 | $7700.00 | Window Closed / Lapsed |