Patent US2877637A successfully refreshed from Google Patents.
US2877637A
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US
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Assignee: H Greenwald Co Inc
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Filing: 1956-03-14
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Granted: 1959-03-17
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Expires: 1976-03-14
Abstract
No abstract record available.
Inventors
- 👤 Greenwald Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:24
CPC Classifications
E; E05; E05C; E05C5/00; E05C5/02; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0863; Y10T292/0864; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5128; Y10T70/5133; Y10T70/5155; Y10T70/5199; Y10T70/5246; Y10T70/5296; Y10T70/5314; Y10T70/554; Y10T70/5562; Y10T70/5575; Y10T70/558; Y10T70/5584
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1000268A
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US1333189A
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US1496172A
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US1574712A
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US1593684A
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Cited
FR765452A
Cited
GB462482A
Cited
US2209015A
Cited
US2547486A
Cited
US2556988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |