Patent US2827957A successfully refreshed from Google Patents.
US2827957A
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Assignee: ROBERT HAWS CO
•
Filing: 1954-07-21
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Granted: 1958-03-25
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Expires: 1974-07-21
Abstract
No abstract record available.
Inventors
- 👤 Haws Ernest Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:28
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/82; E04B2/827; E05; E05D; E05D15/00; E05D15/26; E06; E06B; E06B3/00; E06B3/32; E06B3/48; E06B3/481; E06B7/00; E06B7/16; E06B7/18; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; E05Y2900/142
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2151033A
Cited
US1086962A
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DE463783C
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US2114198A
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US2132817A
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US2250821A
Cited
US2344278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |