Patent US2833152A successfully refreshed from Google Patents.
US2833152A
Expired / Lapsed
US
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Chain
Assignee: MARTIN R HEDLUND
•
Filing: 1956-04-17
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Granted: 1958-05-06
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Expires: 1976-04-17
Abstract
No abstract record available.
Inventors
- 👤 Wilfred E Hedlund
- 👤 Martin R Hedlund
- 👤 Junior M Hedlund
- 👤 Oliver K Hedlund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:54
CPC Classifications
B; B65; B65G; B65G19/00; B65G19/18; B65G19/20; A; A01; A01K; A01K1/00; A01K1/01; A01K1/0128; F; F16; F16G; F16G13/00; F16G13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US231186A
Cited
US377484A
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US452122A
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US1529243A
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US1720166A
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US1635085A
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US2320834A
Cited
US2554589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |