US3527934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Take-apart lamp harps
Assignee: Berger Instruments Inc
•
Filing: 1968-06-17
•
Granted: 1970-09-08
•
Expires: 1988-06-17
Abstract
No abstract record available.
Inventors
- 👤 Herman Bergman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:25
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/06; F21V17/10; F21V17/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2453658A
Cited
US2531023A
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US2662166A
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US2650294A
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US2670432A
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US2802098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |