Patent US2871506A successfully refreshed from Google Patents.
US2871506A
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Assignee: Caldwell Manufacturing Co Inc
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Filing: 1955-02-25
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Granted: 1959-02-03
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Expires: 1975-02-25
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Decker
- 👤 Mahlon H Gregg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:06
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/44; E05; E05D; E05D13/00; E05D13/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732594A
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US2735145A
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US2415614A
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US2602958A
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US2580705A
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US2677156A
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US2662255A
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US2678477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |