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US2878371A
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Assignee: H & H Products Inc
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Filing: 1955-04-25
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Granted: 1959-03-17
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Expires: 1975-04-25
Abstract
No abstract record available.
Inventors
- 👤 Robert A Hanlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:53
CPC Classifications
F; F21; F21V; F21V29/00; F21V29/50; F21V29/70; F21V29/83; F21V1/00; F21V1/12; F21V29/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US1323819A
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US1242808A
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US1430860A
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US1444930A
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GB372127A
Cited
US1963279A
Cited
CH193458A
Cited
US2236303A
Cited
US2312561A
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 |